Search results “Chemical equation ascorbic acid”
The Iodine Clock Reaction at Home (Vitamin C Variation)
In this video we are exploring a variation of the iodine clock reaction that can be pretty easily done at home. There are load of different variations out there and I am going to explore another one in the near future. Patreon: https://www.patreon.com/user?u=2448989&ty=h Facebook: https://www.facebook.com/Nile-Red-1648800202046876/
Views: 181586 NileRed
All About Ascorbic Acid
Natural vs Synthetic Ascorbic Acid Natural and synthetic L-ascorbic acid are chemically identical, and there are no known difference in their biological activity. The possibility that the bioavailability of L-ascorbic acid from natural sources might differ from that of synthetic ascorbic acid was investigated in at least two human studies, and no clinically significant differences were observed. Ascorbic Deficiency The following problems should be expected with increased incidence with severe depletion of ascorbate: disorders of the immune system such as secondary infections, rheumatoid arthritis and other collagen diseases, allergic reactions to drugs, foods and other substances, chronic infections such as herpes, or sequelae of acute infections such as Guillain-Barre and Reye's syndromes, rheumatic fever, or scarlet fever, disorders of the blood coagulation mechanisms such as hemorrhage, heart attacks, strokes, hemorrhoids and other vascular thrombosis; failure to cope properly with stresses due to suppression of the adrenal functions such as phlebitis, other inflammatory disorders, asthma and other allergies; problems of disordered collagen formation such as impaired ability to heal, excessive scarring, bed sores, varicose veins, hernias, stretch marks, wrinkles, perhaps even wear of cartilage or degeneration of spinal discs; impaired function of the nervous system such as malaise, decreased pain tolerance, and cancer from suppressed immune system and carcinogens not detoxified, etc. Note: I am not saying that ascorbate depletion is the only cause of the disorders, but I am pointing out that disorders of the systems would certainly predispose to the diseases and that these systems are known to be dependent upon ascorbate for their proper function. Not only is there the theoretical probability that these types of complications associated with infections or stresses could result from ascorbate depletion, but there was a conspicuous decrease in the expected occurrence of complications in the thousands of patients treated with oral tolerance doses or intravenous doses of ascorbate. This impression of marked decrease in these problems is shared by physicians experienced with the use of ascorbate such as Klenner and KaloKerinos. Successful Dosing For very severe illness, the dose he used was large and the most effective route was intravenous, but the intramuscular route was satisfactory. He gave at least 350 mg per kilogram of body weight (a 70 kg man is 150 pounds; thus 70 x 350 = 24,500 mg). This amount was put in 500cc of sterile water, usually dextrose, saline or Ringer's solution. It was diluted so that there was at least 18cc of diluent to each gram of C. Maintenance Doses Maintenance doses are established by the patient taking bowel tolerance doses 6 times a day for at least a week. He observes if there is any unexpected benefit such as clearing of sinuses, decrease in allergies, increase in energy, etc. Should any chronic problem be benefited, then the dose is decreased to the minimum amount producing the effect. Otherwise, a dose such as 4 to 10 grams a day divided in 3-4 doses is recommended. Patients who take ascorbate in large amounts over a long period of time should probably supplement with vitamin A and multiple mineral preparation. How to make Sodium Ascorbate Sodium Ascorbate is a buffered form of Vitamin C that consists of 90% Ascorbic Acid bound to 10% Sodium. This is the optimal form of Vitamin C for intravenous injection. So, if you have 100 grams of ascorbic acid then you would need 10 grams of baking soda, then add distilled water--so your ratio is 9:1. When adding water this mixture will begin to fizz. Mix gently until fizzing stops. What you have left is sodium ascorbate. Formula -8 grams of Ascorbic Acid -500mgs of potassium bicarb -sodium bicarbonate -magnesium citrate -30 mgs of zinc Generally, the ratios are almost 100-160:10 or thereabouts This will allow for better uptake of the minerals and the buffered C
Views: 172249 HerbsPlusBeadWorks
Chemical Clock, Briggs-Rauscher oscillating Reaction!
Hello everyone, today we are going to conduct a very interesting experiment called a chemical pendulum or the Briggs-Rauscher reaction. For this experiment we'll need: potassium iodate, malonic acid, 30% hydrogen peroxide, potato starch and manganese sulfate. To conduct this reaction, we will have to prepare three solutions in advance. The first solution is quite simple: take a large beaker and pour there 120 ml of 30% hydrogen peroxide, then add 210 ml of distilled water, and here we have our first solution. To prepare the second solution, we will need to weigh the materials. Take a large glass and pour there 14.3 g of potassium iodate and then add there 200 ml of water. As the solubility of potassium iodate in the water is not very high, in order to accelerate the dissolution, heat the mixture on a hot plate. Once the potassium iodate is fully dissolved, add into the beaker 1.5 ml of a concentrated sulfuric acid. Thereafter, we bring the solution up to a volume of about 1/3 liter. Now, let's prepare the last third solution. For this, we measure up 3 g of manganese sulfate and put it into a large glass. After that is done, let's add 5.2 g of malonic acid to it. Then add 230 ml of distilled water. However, the preparation of the third solution is not over yet. Let's take another glass filled with a very hot water, and measure up about 0.1 g of potato starch and add it there. Starch is not very soluble in water, and in order to dissolve it well, we'll need to heat the mixture for about 10 minutes. After the starch is dissolved, and we've got a so-called starch paste, pour it into a glass with our third solution. Next, the solution volume is brought to 330 ml. And now we have all the three solutions ready. Now the most important thing - conducting the reaction. In principle, there is not much of a difference how to mix the solutions, but I'm choosing the reverse sequence. The reaction needs to be carried out with a magnetic stirrer, to get the best result. Take a glass with the third solution, put on a magnetic stirrer and turn on mixing. Next, the third solution is poured into the second solution, and finally into the first solution. Thereafter, the reaction begins. First solution turns yellow and then it becomes dark blue. After that, the solution is decolorized and the cycle repeats. That is why this reaction is called chemical pendulum. After each cycle, the reaction slows down and the next cycle takes a little longer. The essence of this reaction is the oxidation of malonic acid with hydrogen peroxide. This produces carbon dioxide and water. The reaction has a complex scheme. Yellow color appears due to the formation of free iodine, blue color - the reaction of starch to free iodine. Eventually there won't be any malonic acid left in the solution, and the reaction decays. Finally the solution becomes simply blue as of the end of our malonic acid, which would restore the formed iodine. Facebook: https://www.facebook.com/thoisoi2 Patreon: https://www.patreon.com/Thoisoi?ty=h Music: http://audiomicro.com
Titration of lemon juice (Chemistry Laboratory Previews)
A preview of an experiment exploring the technique of titration, used to determine the citric acid content in lemon juice. Some re-use permitted (Creative Commons BY-NC).
Views: 7083 Swinburne Commons
Incredible Chemical Reaction!
Add me on Facebook. (click LIKE on Facebook to add me) http://www.facebook.com/brusspup Download the song in this video: Song name: Monolith iTunes https://itunes.apple.com/us/album/monolith-single/id596457486 Amazon http://www.amazon.com/Monolith/dp/B00B60NGFY/ref=sr_1_1?ie=UTF8&qid=1378343773&sr=8-1&keywords=monolith+brusspup There are no editing tricks in the video. All of the reactions that you see are uncut and play at the original speed. This is a classic chemical reaction. It's called the iodine clock reaction. There are several variations of how this chemical reaction can be performed using different chemicals than the ones I used in the video. You can order clock reaction kits from several science related websites. You can also use simple store bought chemicals like vitamin C, iodine, hydrogen peroxide and starch. A quick internet search will turn up multiple ways of performing the experiment. Even though I've played around with the clock reaction experiment before I've always wanted to capture the reaction as the liquid was being poured. To me, this is the most stunning way of demonstrating the reaction. Here's the other version of the clock reaction I made several years ago http://www.youtube.com/watch?v=qeDhaWEEvfg
Views: 6358428 brusspup
Iodine Clock Reaction Chemical Experiment!
Hello everyone. Today we will have a very unusual chemical reaction, called "Egyptian night" or the simplified version of the chemical pendulum. First, let's take a beaker and pour there a small amount of potassium iodide and sodium thiosulfate. Next dissolve this mixture into a 100 ml of water. Take a second beaker and dissolve there a little soluble potato starch. First, dissolve starch in a cold water, then pour boiling water into the beaker, to better dissolve starch. The solution becomes slightly cloudy. Next, pour starch solution to the first solution, where we have a mixture of potassium iodide and sodium thiosulfate. We get a little cloudy solution. Next, let's make a second working solution. That solution may be of a various concentrations. For this purpose I poured into each beaker a different amounts of 30% hydrogen peroxide, solution was acidified and the acid solution was diluted to 40 ml. We now carry out the reaction. I set the clock so you can see how the reaction occurs. In the main beaker I poured 20ml of the first working solution, and now I'm pouring the second working solution into the beaker. Time passes and the solution rapidly becomes black. The color change is a reaction between iodine and starch, starch as an indicator of iodine. Now take two beakers of the first working solution. Now, however, the second solution is with different concentrations and the reaction time can change. One, two, three, and mix solutions. The first solution reacts rapidly, but the second one is a bit longer. This reaction is quite beautiful and spectacular. You can play long enough with it. And now let's look at the color change in a slow motion. Facebook: https://www.facebook.com/thoisoi2 Patreon: https://www.patreon.com/Thoisoi?ty=h Music: http://audiomicro.com
KOH against ascorbic acid titration
First year undergrad titration, yellow = near end-point. Meta-cresol purple as pH indicator. Beautiful colour change/gradient observed with great demonstration of diffusion within solution. Sorry about vertical format and annoying phone flap obstructing footage (top right).
Views: 528 Jayde
An "Oscillating" Chemical Reaction
The Briggs-Rauscher oscillating reaction is one of the very few oscillating reactions that we know of. Throughout the reaction, the concentration of iodide (I-) goes up and down, and this causes a swap between 2 processes. The the concentration is high, the process that consumes iodide is favored. When it is low, the process that produces it is favored. This causes a constant fluctuation of iodide. As the iodide increases, it forms I2 which is yellow, then the I2 eventually combines with I- to form I3. This complexes with starch and forms a blue-black complex. The iodide producing process is then shutdown and the process that consumes it takes over. The iodide concentration drops, the I3-starch complex falls apart and the color dissipates. The I2 is sequestered by malonic acid and the solution reverts to colorless. The [i-] continues to fall until the other process then takes over. Iodide is produced again and the cycle repeats itself. NOTE: The yellow color of solution A was solved almost instantly by Bill Smathers. The iodate was likely contaminated with iodide. In acid, the lead to the production of I2, which gave the solution a yellow color. Upon addition of B, the I2 was sequestered by malonic acid! ------------------------------------------ Nile Red Shop: https://www.nilered.ca Patreon: https://goo.gl/3h353G Facebook: https://goo.gl/uyxvJV Twitter: https://goo.gl/uCmnV4 Personal Instagram: https://goo.gl/EdBq4b
Views: 215130 NileRed
Vitamin C or Ascorbic acid - Medical biochemistry  animated lectures
Vitamin C Ascorbate. Water soluble, cofactor for enzymatic reactions Anti-oxidant properties, guards against oxidative stress Vit C serves as a cofactor for prolyl-4-hydroxylase and lysyl hydroxylase, an enzyme involved in collagen synthesis. Stable collagen cannot form without proline and lysine hydroxylation. This hydroxylation take place in the ER. Hydroxylation of proline secures the collagen chains in triple helix formation. The subsequent hydroxylation of lysine is required for cross-linking. Deficiency of lysyl hydroxylase: Ehlers-Danlos Syndrome Type 6 Other roles: Cofactor for dopamine hydroxylase (dopamine → norepinephrine) Required for reduction of iron from Fe3+ → Fe2+, allowing absorption in the duodenum. Deficiency → scurvy.
Chemistry experiment 28 - Iodine clock reaction
Famous iodine clock reaction: oxidation of potassium iodide by hydrogen peroxide. Mixture A: - 10 mL 2.0 M sulphuric acid - 10 mL 3% hydrogen peroxide - 80 mL water Mixture B: - Solution of 0.04 g sodium thiosulfate pentahydrate in 20 mL water - Solution of 0.9 g potassium iodide in 5 mL water - 4 mL starch solution - 71 mL water
Views: 156385 koen2all
"Vitamin C" Clock Reaction Demo
A green alternative to the "Iodine Clock Reaction" experiment. Teaches concept: rates of reactions.
Views: 8347 Aubrey Garcia
Lec 16, Thermochemistry, Hybridisation of ascorbic acid
For more educational content visit our website - http://www.patterns.remonstrator.org and Sign Up! Subscribe our channel for more videos! Videos are licensed under Creative Commons - http://creativecommons.org/licenses/by-nc-sa/3.0/us/legalcode
General Chemistry I - Solving for an Empirical Formula
This video describes how to solve for the empirical formula of vitamin C.
Views: 359 Tony St. John
How to do titration calculations of vitamin C with iodine for IB
How to do titration calculations of vitamin C with iodine for IB Values taken from an experimental titration of vitamin C tablets using iodate done in an IB Chemistry practical. The iodate turns the KI solution to iodine I2. When all the vitamin C is used up the iodine can react with the starch to go blue. The calculations to go from iodate to vitamin C are detailed here including uncertainty propagation and percent error needed for the Internal Assessment in IB. 0:55 Explanation of method 3:50 Calculation of number of moles of iodate used 5:20 Mole ratio conversion from iodate to vitamin C 6:45 Determining total moles of vitamin C in tablet 7:55 Determining total mass of vitamin C in tablet 9:00 Determining the uncertainty (uncertainty propagation for precision) 10:05 Determining the percent error (accuracy) PPTs and quizzes are available on http://www.mrwengibchemistry.com/ Connect with me: Facebook: https://www.facebook.com/IBChemistry2016/ Twitter: https://twitter.com/andrewweng0406 Google plus: https://plus.google.com/u/0/108611113268141564345 Pinterest: https://www.pinterest.com/mrandrewweng040/ib-chemistry/ Weibo: http://www.weibo.com/5984983999/profile?topnav=1&wvr=6&is_all=1
Views: 22382 Andrew Weng
What Is The Chemical Name For Vitamin C?
Vitamin c new world encyclopedia. Vitamins, their chemical names and functions takerx. Defined stereocentres 2 of 16 jul 2013. Because the vitamin is an acid, it chemical name l ascorbic acid3 oxo gulofuranolactone (enol form)Vitamin c wikipedia. Although most animals ascorbic acid cid 54670067 structure, chemical names, physical and properties, classification, patents, literature, biological activities, vitamin c 2 13c 71309896 caverage mass176. Iupac name 2 oxo l threo hexono 1,4 lactone 2,3 enediol or (r) 3,4 dihydroxy 5 ((s) 1,2 dihydroxyethyl)furan 2(5h) one vitamins, their chemical names and functions. Formula vitamin cmolecular weight 176. What is the chemical name of vitamin c? Vitamins and their names deficiency diseases vitamins name, sources, deficieny discoverybritannica. Vitamin c, also known as ascorbic acid and l acid, is a vitamin found in food used dietary supplement. As a supplement it is used to treat and prevent scurvy vitamin c, also called ascorbic acid, water soluble, carbohydrate like substance that involved in certain metabolic processes of animals. Vitamin c (ascorbic acid), lemons, scurvyvitamin c, also called ascorbic acid, water soluble, carbohydrate like substance that is involved in certain metabolic processes of animals 23 jan 2016 systematic name. Vitamin c wikipedia vitamin. Its chemical name is ascorbic acid. What is the chemical name for vitamin c? Quoravitamin c 2 13c c6h8o6 what of Youtube. 00 c, n a, n a vitamin c known as ascorbic acid is a water soluble vitamin. Vitamin c wikipedia. If you want to describe its 4 jun 2014 vitamins and their chemical names deficiency diseasesvitamin name vitamin c ascorbic acid of vitamins, sources, approximate year discovery disease. Vitamin c is synthesised vitamin ascorbic acid. Vitamin chemical properties, physical properties and general vitamin c [pdf]. Both forms are mirror images of the same molecular structure vitamin c (chemical names ascorbic acid and ascorbate) is a six carbon lactone which synthesised from glucose by many animals. The chemical name of vitamin c isvitamin molecule world moleculesquali and physical properties dsm. Source institute of vitamins, chemical names, functions c, ascorbic acid, it is a water soluble vitamin answer to the name c is; As cerotic acid. Scurvy! figure 1 chemical structure of ascorbic acid1b pure vitamin c is a white, crystalline solid that soluble in water and ethyl alcohol. Common name vitamin c trading if you want to buy bulk quantities from a manufacturer l ascorbic acid. Vitamin c oregon state chemistry. Ascorbic acid (pim 046) ipcs inchem. 124 dachemspider id10189562. Melting point about 190c (with decomposition) vitamin, chemical name, formula, solubility, molar mass, melting point, boilin vitamin b1, thiamine, c12h17cln4os, water, 300. Deficiency of vitamin c is caused the has chemical formula c6h8o6 and a molecular mass 176.
Iodine Clock Reaction
You can try an at home version of this experiment using a few things you may have in your bathroom medicine cabinet. In may ways this experiment feels almost like magic. What you need: distilled water (tap water will work OK as well) a couple plastic cups 1000 mg vitamin C tablets tincture of iodine (2%) hydrogen peroxide (3%) liquid laundry starch What to do: Make a vitamin C solution by crushing a 1000 mg vitamin C tablet and dissolving it in 2 oz of water. Label this as “vitamin C stock solution”. Combine 1 tsp of the vitamin C stock solution with 1 tsp of iodine and 2 oz of water. Label this “solution A”. Prepare “solution B” by adding 2 oz of water to 3 tsp of hydrogen peroxide and 1/2 tsp of liquid starch solution. Pour solution A into solution B, and pour the resulting solution back into the empty cup to mix them thoroughly. Keep pouring the liquid back and fourth between the cups. What’s going on? There are actually two chemical reactions going on at the same time when you combine the solutions. During these reactions two forms of iodine created – the elemental form and the ion form. In Reaction # 1 iodide ions react with hydrogen peroxide to produce iodine element which is blue in the presence of starch. BUT, before that can actually happen, the Vitamin C quickly reacts and consumes the elemental iodine. The net result, at least for part of the time is that the solution remains colorless with excess of iodide ions being present. Now after a short time as the reactions keep proceeding in this fashion, the Vitamin C gets gradually used up. Once the Vitamin C is used up, the solution turns blue, because now the iodine element and starch are present. Safety Precautions: Be careful when working with the iodine – it stains, and it stains really well. Be very careful not to spill any of the solution. Waste Disposal: Dispose all liquids down the drain with plenty of water. Imagination Station, Toledo's hands-on science center, is a vital non-profit organization that is an integral part of Toledo's economic, educational and social landscape. Imagination Station provides a critical layer of science enrichment by serving as an educational partner for teachers, schools and parents. It's with a thoughtful blend of exhibits, experiences, education and excitement that Imagination Station is inspiring future generations of scientists in Northwest Ohio. With more than 250 hands-on exhibits and demonstrations, Imagination Station delivers a multi-sensory experience that's as fun as it is educational. Visit us at http://www.imaginationstationtoledo.org
Views: 6512 ISTscience
Gold Aqua regia dissolving. Chloroauric acid. gold refining recovery. Pure gold precipitate.
You can donate to support us, to fund research and development. ►► https://goo.gl/bZDnWJ youtube Subscribe to this ►► Subscribe https://goo.gl/93XuWY ✔️ THANK YOU ✔️ Archimedes Channel http://www.goldextractionprocess.com Aqua regia is primarily used to produce chloroauric acid, the electrolyte in the Wohlwill process. This process is used for refining the highest quality (99.999%) gold. Subscribe to this ►► Subscribe https://goo.gl/93XuWY ✔️ THANK YOU ✔️ Aqua regia is also used in etching and in specific analytic procedures. It is also used in some laboratories to clean glassware of organic compounds and metal particles. This method is preferred over the "traditional" chromic acid bath for cleaning NMR tubes, because no traces of paramagnetic chromium can remain to spoil spectra. While chromic acid baths are discouraged because of the high toxicity of chromium and the potential for explosions, aqua regia is itself very corrosive and has been implicated in several explosions due to mishandling. Due to the reaction between its components resulting in its decomposition, aqua regia quickly loses its effectiveness (yet remains a strong acid), so its components are usually only mixed immediately before use. While local regulations may vary, aqua regia may be disposed of by careful neutralization, before being poured down the sink. If there is contamination by dissolved metals, the neutralized solution should be collected for disposal. Chloroauric acid is an inorganic compound with the chemical formula HAuCl4. Both the trihydrate and tetrahydrate are known. It is an orange-yellow solid, a common precursor to other gold compounds and an intermediate in the purification of gold metal. Both the trihydrate and tetrahydrate are available commercially. aqua regia refine gold refining recovery 24k pure 999 fine bullion ingot gold refining recovery. Pure gold precipitate produced by the aqua regia chemical refining process. Gold Aqua regia dissolving. Chloroauric acid. gold refining recovery. Pure gold precipitate.
Views: 84698 Archimedes Channel
Redox Reactions: Crash Course Chemistry #10
All the magic that we know is in the transfer of electrons. Reduction (gaining electrons) and oxidation (the loss of electrons) combine to form Redox chemistry, which contains the majority of chemical reactions. As electrons jump from atom to atom, they carry energy with them, and that transfer of energy is what makes all life on earth possible. **Special Thanks to Matt Young at the University of Montana (Geosciences Department, Environmental Biogeochemistry Lab) who helped with the chemical demonstrations.** Oxidation 1:42 Reduction 1:03 Oxidation Numbers 3:29 Redox Reactions 5:59 Oxidation Reactions 6:28 Balancing Oxidation Reactions 7:18 Also thank you to the following chemistry teachers for assistance: James Sarbinoff Rachel Wentz Edi González Lucas Moore Chris Conley Addie Clark Julia Rosinski Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashC... Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 1922344 CrashCourse
Chemical Analysis
002 - Chemical Analysis In this video Paul Andersen explains how chemical analysis is important in determining the composition, purity and empirical formula of a compound. An empirical formula determination problem is also included. Music Attribution Title: String Theory Artist: Herman Jolly http://sunsetvalley.bandcamp.com/track/string-theory All of the images are licensed under creative commons and public domain licensing: "File:2oz Gold Engelhard.JPG." Wikipedia, the Free Encyclopedia, March 26, 2013. http://en.wikipedia.org/w/index.php?title=File:2oz_gold_Engelhard.JPG&oldid=502536502. File:Ascorbic Acid (2).JPG, n.d. http://commons.wikimedia.org/wiki/File:Ascorbic_acid_(2).JPG. "File:Ascorbic-acid-from-xtal-1997-3D-balls.png." Wikipedia, the Free Encyclopedia. Accessed July 29, 2013. http://en.wikipedia.org/wiki/File:Ascorbic-acid-from-xtal-1997-3D-balls.png. "File:D-glucose-chain-3D-balls.png." Wikipedia, the Free Encyclopedia. Accessed July 29, 2013. http://en.wikipedia.org/wiki/File:D-glucose-chain-3D-balls.png. File:FAB MS.jpg, n.d. http://commons.wikimedia.org/wiki/File:FAB_MS.jpg. File:Gold Bar.png, n.d. http://commons.wikimedia.org/wiki/File:Gold_bar.png. "File:Jöns Jacob Berzelius.jpg." Wikipedia, the Free Encyclopedia. Accessed July 29, 2013. http://en.wikipedia.org/wiki/File:J%C3%B6ns_Jacob_Berzelius.jpg.
Views: 86264 Bozeman Science
CH403 10 Acid-Base Titrations
A discussion of acid-base titrations. This is from Chapter 10 in Quantitative Chemical Analysis 8E by Harris.
Views: 3166 Ratliff Chemistry
Calculating Equilibrium Concentrations For a Polyprotic Acid 001
Ascorbic acid (H2C6H6O6), also known as Vitamin C, is a diprotic acid (Ka1 = 1.0 x 10-5; Ka2 = 5 x 10-12) found in citrus fruits. Calculate [H2C6H6O6], [HC6H6O6-], [C6H6O62-], and the pH of a 0.050 M ascorbic acid solution. Interviews 1) Revell, K. (November 16, 2016) “An Interview with Heath Giesbrecht, Part I” The Macmillan Community https://community.macmillan.com/groups/flipped-chemistry/blog/2016/11/17/an-interview-with-heath-giesbrecht-part-1 2) Revell, K. (November 16, 2016) “An Interview with Heath Giesbrecht, Part II” The Macmillan Community https://community.macmillan.com/groups/flipped-chemistry/blog/2016/11/17/an-interview-with-heath-giesbrecht-part-2
Citric acid and Baking Soda Reaction
This is a simple reaction involving 50/50 mix citric acid and baking soda...which forms CO2 gas and trisodium citrate!
Views: 16327 Paul Pyro
Potassium permanganate and citric acid
Hot water plus a bit of potassium permanganate and almost immediate results. Solution changes the color of the color purple. After the addition of citric acid solution after a few minutes of pure again is clear.
Views: 75393 igor30
💰 gold refining process method. e book Gold extraction process. aqua regia 24k pure 99.99% refine.
Hope you like our compilation, please share it and SUBSCRIBE! Watch also our other videos! youtube Subscribe to this ►► Subscribe https://goo.gl/93XuWY ✔️ THANK YOU ✔️ Archimedes Channel http://www.goldextractionprocess.com We are told how The processes used to refine gold methods of refining gold are refining use of chemicals. ebook gold refining process. e book gold recovery. aqua regia refine gold refining recovery 24k pure 99.99% Aqua regia chalcogenides. Subscribe to this ►► Subscribe https://goo.gl/93XuWY ✔️ THANK YOU ✔️ Aqua regia (Latin, lit. "royal water" or "king's water") is a mixture of nitric acid and hydrochloric acid,optimally in a molar ratio of 1:3. Aqua regia is a yellow-orange fuming liquid. Aqua regia was so named by alchemists because it can dissolve the noble metals gold and platinum. However, aqua regia does not dissolve or corrode silver, titanium, iridium, ruthenium, rhenium, tantalum, niobium, hafnium, osmium, or rhodium. Applications Aqua regia is primarily used to produce chloroauric acid, the electrolyte in the Wohlwill process. This process is used for refining the highest quality (99.999%) gold. Aqua regia is also used in etching and in specific analytic procedures. It is also used in some laboratories to clean glassware of organic compounds and metal particles. This method is preferred over the "traditional" chromic acid bath for cleaning NMR tubes, because no traces of paramagnetic chromium can remain to spoil spectra. While chromic acid baths are discouraged because of the high toxicity of chromium and the potential for explosions, aqua regia is itself very corrosive and has been implicated in several explosions due to mishandling. Due to the reaction between its components resulting in its decomposition, aqua regia quickly loses its effectiveness (yet remains a strong acid), so its components are usually only mixed immediately before use. While local regulations may vary, aqua regia may be disposed of by careful neutralization, before being poured down the sink. If there is contamination by dissolved metals, the neutralized solution should be collected for disposal. Chemistry Dissolving gold. Pure gold precipitate produced by the aqua regia chemical refining process Aqua regia dissolves gold, though neither constituent acid will do so alone, because, in combination, each acid performs a different task. Nitric acid is a powerful oxidizer, which will actually dissolve a virtually undetectable amount of gold, forming gold ions (Au3+). The hydrochloric acid provides a ready supply of chloride ions (Cl−), which react with the gold ions to produce tetrachloroaurate(III) anions, also in solution. The reaction with hydrochloric acid is an equilibrium reaction which favors formation of chloroaurate anions (AuCl4−). This results in a removal of gold ions from solution and allows further oxidation of gold to take place. The gold dissolves to become chloroauric acid. In addition, gold may be dissolved by the free chlorine present in aqua regia. Appropriate equations are.
Views: 27043 Archimedes Channel
Extracting Citric Acid from Lemons
Today we are extracting citric acid from some large large lemons. Citric acid is quite a useful molecule in general, but I don't have any particular uses for it. It is mostly used as a pH buffering agent in chemistry and isn't use in direct synthesis. A buffering solution is a solution that resists pH change. It is useful in synthesis when you need to keep the pH relatively constant during a reaction. In my Cadaverine video, I used citric acid to make a pH buffer solution: https://youtu.be/C5hxFAwKIzs ------------------------------------------ Nile Red Keychain Shop: https://www.shapeways.com/shops/nile-red Patreon: https://www.patreon.com/user?u=2448989&ty=h Facebook: https://www.facebook.com/NileRed1/ Twitter: https://twitter.com/NileRed2 Personal Instagram: https://www.instagram.com/nilered2/ Audio work: Kyle Gamble (kylegambleaudio@gmail.com)
Views: 931125 NileRed
Titration of Vitamin C with Potassium Iodate
A solution of Vitamin C with a starch indicator is titrated with Potassium Iodate. A blue endpoint is reached, and the amount of Potassium Iodate added is measured to give the stoichiometrically measured amount of vitamin C.
Views: 20624 CSChemistry
Vitamin C assay BP1988 - Ammonium Cerium (IV) Sulphate
One drop of Ammonium Cerium (IV) Sulphate turned the red solution containing 30ml water, 20ml Sulphuric Acid 1M, 0.15g Ascorbic Acid and 6 drops of Ferroin indicator into blue (denoting the end-point of the titration). 1st time I record a clip in lab (which is not officially allowed). Next time I'll try to get a better view.
Views: 2065 Hieuptnk
Chemical Reactions Lab
Identify the 5 different chemical reactions and predict the products of each.
Views: 15 Nick Cornwell
Citric acid + baking soda + water reaction
Delta h- 78.8 Endothermic reaction Citric acid is an acidic and the baking soda is a base Formula- H3C6H5O7 + 3 NaHCO3 --- 3CO2 + 3 H2O + Na3C6H5O7
Views: 71716 logan hughes
Writing Empirical Formulas From Percent Composition - Combustion Analysis Practice Problems
This chemistry video tutorial shows you how to determine the empirical formula from percent composition by mass in grams. This video also shows you how to determine the molecular formula from the empirical formula using the combustion analysis technique of a compound. This video contains plenty of examples and practice problems that can help you on your next upcoming worksheet assignment / quiz. Here is a list of topics: 1. Empirical Formula - Lowest Whole Number Ratio 2. Finding the empirical formula from mass in grams 3. Determining the empirical formula using percent composition by mass 4. Calculating Molecular Formula From Empirical Formula Using Molar Mass 5. Combustion Analysis - Compound with 2 elements - Carbon & Hydrogen 6. Empirical Formula From Combustion Analysis - 3 Element Compound - Carbon, Oxygen, and Hydrogen 7. Decimal Ratio Subscripts & Fractions - Converting to whole numbers
Home science: vitamin c iodine clock
Put on those safety goggles and mash the 1000 mg Vitamin C tablet by placing it into a plastic bag and crushing it with a rolling pin or the back of a large spoon. Get it into as much of a fine powder as possible. Then put all the powder in the first cup and add 2 ounces (60 ml) of warm water. Stir for at least 30 seconds. (The water may be a little cloudy) Let's call this "LIQUID A" Now put 1 teaspoon (5 ml) of your LIQUID A into a new cup and add to it: 2 oz (60 ml) of warm water and 1 teaspoon (5 ml) of the iodine. Notice the brown iodine turned clear! Let's call this "LIQUID B." By the way, you're done with LIQUID A - you can put it aside. In the last cup, mix 2 oz of warm water, 1 Tablespoon (15 ml) of the hydrogen peroxide and 1/2 teaspoon (2.5 ml) of the liquid starch. This is, you guessed it, "LIQUID C" Okay, that was a lot of preparation, on to the fun part. Gather the friends and family and pour all of LIQUID B into LIQUID C. Then pour them back and fourth between the 2 cups a few times. Place the cup down and observe....be patient....somewhere between a few seconds and a few minutes, the liquid will suddenly turn dark blue!
Views: 4755 stevenlovesscience
practice vitamin c titration
A demonstration of a simple iodometric titration of Vitamin C without using moles, grams, or balanced reaction equations.
Views: 4 VHS-Science
Decolourisation of DCPIP solution in vitamin C
This short video is to explain the role of vitamin C in human body.
Views: 11439 Abbirami Nakkeeran
Balance a Redox Reaction (ACIDIC solution)
Ask me questions: http://www.chemistnate.com How to balance a Redox Reaction in Acidic solution. 1. Make sure electrons gained = electrons lost 2. Add H2O to whichever side doesn't have enough O 3. Add H+ to whichever side doesn't have enough H
Views: 685668 chemistNATE
Iodine and sodium thiosulfate titrations
Well another Redox Titration with a lot molar ratio work! Explore this video to find out how to tackle the Titration calculation questions to do with iodine and sodium thiosulfate.
Views: 52987 Allery Chemistry
Redox titration iodine and thiosulphate
We go through the basics of the iodine and thiosulphate titration and how it can be used to determined the concentration of oxidising agents.
Views: 17881 DrOrchard
Titration of a Commercial Soda
Lab Gen Chem I
Views: 210 Brittany Rollins
Vitamin C Lab Calculations
Views: 17896 chemstoked
NEET/IIT JEE/ NCERT: Solutions -Intext question 2.11
Calculate the mass of ascorbic acid (Vitamin C, C6H8O6) to be dissolved in 75 g of acetic acid to lower its melting point by 1.5°C. Kf = 3.9 K kg mol-1 Our Official Facebook Page : https://www.facebook.com/livetutelage Our Official Youtube Channel : https://www.youtube.com/c/LiveTutelage Online Test Preperation : http://livetutelage.com/test-preparation/ Online Library : http://livetutelage.com/library/
Views: 872 LiveTutelage
Controlling Reactant Concentrations
A short demonstration of why we so often use drop-wise addition of reagents combined with rapid stirring of a reaction mixture. Dispersing small amounts of one reagent into another sequentially through drop-wise addition allows us to keep the concentration of that reagent low throughout the reaction even though we ultimately add a large amount of it.
Views: 384 ChemSurvival
Redox Titration
An Redox reaction is a type of chemical reaction that involves a transfer of electrons between two species. An Redox reaction is any chemical reaction in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electrons. Contents:- • Terms: Oxidation –Reduction, Oxidising and reducing Agents, Standard Reduction • Potential, Nernst Equation, redox titration curve and Equivalence point potential. • Permaganatometry and Cerrimetry, • Applications- Assay of hydrogen peroxide solution (Permaganometry), Assay of Ascorbic acid tablets/ Dried Ferrous sulphate • Iodometry, Iodimetry, Potassium dichromate, potassium iodate titrations, and Potassium bromate titrations. • Applications-Assay of hydrogen peroxide solution, Assay of Ascorbic acid API (Iodimetry), Assay of KMnO4 (Back Iodometry), Assay of Potassium iodide (Iodate titration). ............................................................................................................................................................................................................................................... Other Important Information is there in this video. If you like this video, Don't Forgot to like and share. any queries and questions you can comment If you want ppt, you can contact me on the following mail Email - pharmaknowledge17@gmail.com Music Credits – Warm by the Fire by TeknoAXE It is licensed under a Creative Commons Attribution 4.0 International License Subscribe my channel - https://www.youtube.com/c/PharmaKnowledge Thank You For Watching.
Views: 3171 Pharma Knowledge
PHAR 1122 Redox Titration
This lecture gives a brief description of redox reaction and its application in the titration method.
Views: 200 Ismin Zainol
Oxidation Reduction Potential Titration
After a quick overview of the Oxidation Reduction Potential (ORP) probe, see how it can be used to perform a redox titration of vitamin C with iodine. product information: Advanced Chemistry through Inquiry lab manual: http://pasco.com/go?PS-2828 ORP Probe: http://pasco.com/go?CI-6716 Drop Counter: http://pasco.com/go?PS-2117
Views: 3318 pascoscientific