Home
Search results “Chemical equation ascorbic acid”
Analysis of ascorbic acid (Chemistry Laboratory Previews)
 
03:46
A preview of an experiment exploring the technique of titration, used to determine the ascorbic acid composition in a formulation, and to take one last opportunity to perfect your lab techniques prior to your exam.
Views: 765 Swinburne Commons
The Iodine Clock Reaction at Home (Vitamin C Variation)
 
09:35
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: 175248 NileRed
How to do titration calculations of vitamin C with iodine for IB
 
10:57
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: 20817 Andrew Weng
Calulate Empirical Formula From Percent Mass of Atoms 002
 
08:22
Vitamin C (ascorbic acid) contains 40.92% carbon, 4.58% hydrogen, and 54.50% oxygen by mass. Calculate the empirical formula of ascorbic acid.
All About Ascorbic Acid
 
29:20
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: 162423 HerbsPlusBeadWorks
Decolourisation of DCPIP solution in vitamin C
 
04:05
This short video is to explain the role of vitamin C in human body.
Views: 10623 Abbirami Nakkeeran
6Empirical Formula to Molecular Formula and Percent Mass Comp
 
11:06
In this video we work out a problem(ascorbic acid/vitamin C) that gives you percent mass composition. From there we find its empirical formula. Finally using the compounds molar mass we work out the molecular formula.
Views: 235 Jorge Gandara
What Is The Chemical Name For Vitamin C?
 
00:47
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.
Making Benzoic Acid (from sodium benzoate)
 
09:44
Hey guys, in this epic segment, we are making some benzoic acid from sodium benzoate. This is a good example of regenerating an acid from its salt form. Doug's Lab video: https://www.youtube.com/watch?v=C31AKmRi69Q New Channel: https://www.youtube.com/watch?v=Ke_xIs5f1sA Patreon: https://www.patreon.com/user?u=2448989 GoFundMe: https://www.gofundme.com/gdqexmp8 Facebook: https://www.facebook.com/Nile-Red-1648800202046876
Views: 23366 NileRed
Multical-1000 is improved formula which provides high potency calcium, vitamin c, b12 and folic acid
 
05:25
Assalam alikumnawaz khan app logo ki khidmat me Multical-1000 is produced by Nabi Qasim Industries, which contains Calcium Lactate Gluconate, Vitamin C, Calcium carbonate, Folic Acid and Vitamin B12. Multical-1000 is improved formulation which provides high potency calcium, vitamin c, b12 and folic acid in glucose base and helps to overcomeki saat
Views: 870 CLINIC DOCTOR
Potassium permanganate and citric acid
 
01:36
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: 73158 igor30
KOH against ascorbic acid titration
 
00:59
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: 515 Jayde Hare
Vitamin C C6H8O6
 
05:07
Views: 781 Lina Chen
Incredible Chemical Reaction!
 
02:09
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: 6343840 brusspup
What is a Standard Curve?
 
06:52
How much stuff is in that tube? This video will explain how to make and use a standard curve to measure the concentration of an unknown substance in s sample of blood / urine / mucus / whatever! Light, Spectroscopy and the Spectrophotometer: http://www.penguinprof.com/uploads/8/4/3/1/8431323/261_labs_extra_spectrophotometry.pdf JOIN THE FUN all over the WEB: SUBSCRIBE: http://www.youtube.com/user/ThePenguinProf FACEBOOK: https://www.facebook.com/ThePenguinProf GOOGLE+: https://plus.google.com/+Penguinprof/posts TWITTER: https://twitter.com/penguinprof WEB: http://www.penguinprof.com/ SPONSORED BY AUDIBLE.COM PenguinProf LOVES Audible and now the feeling is mutual! Audible.com is the premier provider of digital audiobooks. Audible has over 150,000 titles to choose from in every genre. Audible titles play on iPhone, Kindle, Android and more than 500 devices for listening anytime, anywhere. Click to learn more and download a FREE audiobook of your choice! http://www.audibletrial.com/PenguinProf
Views: 66925 ThePenguinProf
Calculating Equilibrium Concentrations For a Polyprotic Acid 001
 
12:05
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
Chemical Analysis
 
07:24
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: 82709 Bozeman Science
"Vitamin C" Clock Reaction Demo
 
05:04
A green alternative to the "Iodine Clock Reaction" experiment. Teaches concept: rates of reactions.
Views: 8065 Aubrey Garcia
Lec 16, Thermochemistry, Hybridisation of ascorbic acid
 
02:11
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
Redox Reactions: Crash Course Chemistry #10
 
11:13
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: 1874623 CrashCourse
Home science: vitamin c iodine clock
 
07:39
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: 4685 stevenlovesscience
Lab 3-Determination of the Acid Number of Vegetable Oils by Titration
 
04:58
This lab explains how to determine the acid number for vegetable oils by the process of titration. It's important to test the acid value of your vegetable oils prior to biodiesel production. For more information on the chemistry labs, visit www.biodieseleducation.org
Views: 11354 Biodiesel Education
💰 gold refining process method. e book Gold extraction process. aqua regia 24k pure 99.99% refine.
 
10:17
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 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: 23468 Archimedes Channel
Citric acid and Baking Soda Reaction
 
00:38
This is a simple reaction involving 50/50 mix citric acid and baking soda...which forms CO2 gas and trisodium citrate!
Views: 15371 Paul Pyro
Chemical Clock, Briggs-Rauscher oscillating Reaction!
 
04:16
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
practice vitamin c titration
 
04:31
A demonstration of a simple iodometric titration of Vitamin C without using moles, grams, or balanced reaction equations.
Views: 4 VHS-Science
Iodine and sodium thiosulfate titrations
 
08:25
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: 50640 Allery Chemistry
An "Oscillating" Chemical Reaction
 
18:03
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: 205722 NileRed
Titration of Citric Acid with Sodium Hydroxide
 
11:03
Weak acid titrated with a strong base.
Views: 4551 eighthourlunch
Extracting Citric Acid from Lemons
 
16:20
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: 826080 NileRed
Titration of Vitamin C with Potassium Iodate
 
01:47
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: 20529 CSChemistry
Removal of chlorine by Sonaki Vitamin C Hand Shower
 
03:23
SONAKI® Vitamin C Hand Shower releases Vitamin C through a filter in the showerhead to instantly neutralize Chlorine in tap water. This process helps to prevent and reduce skin itchiness, dandruff, repair damaged hair and skin Keratin, which are harmful side effects of Chlorine. Vitamin C wipes out allergens that cause various skin allergy thus preventing growth of harmful bacteria on your skin. As the metabolism of the skin renewal process improves, the skin naturally becomes well moisturized. Therefore, get rid of Chlorine. Shower your skin with chemical free water by switching from alkali water to weak acidic water. Simply by eliminating active oxygen, skin ageing comes to a pause while the essence of Vitamin C continues to effectively keep your skin hydrate with moisture. This chemical formula below shows how Vitamin C works in removing Chlorine. C6H8O6(Vitamin-C) + HCLO = C6H6O6 -- H2O + HCL (Hydrochloric Acid)
Views: 3567 Keave Ang
Study of an Iodine Clock Reaction - WJEC A Level Experiment
 
02:17
Studying the kinetics of the oxidation of iodine ions by hydrogen peroxide in acid solution. Filmed at Olchfa School. Music: Straight by Bensound
Views: 3227 SpaceyScience
Gold Aqua regia dissolving. Chloroauric acid. gold refining recovery. Pure gold precipitate.
 
10:39
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: 76259 Archimedes Channel
How much citric? - the citric / heroin reaction
 
09:39
A short film explaining the reaction that takes place when an acid is added to water in order to dissolve brown heroin. Essential viewing for everyone who injects heroin, and those who work with them. Now with subtitles, so you can watch it on silent.
Views: 161406 exchangesupplies.org
CHEM111L: vitamin C post-lab video
 
03:43
CHEM111L General Chemistry I Lab Rose-Hulman Institute of Technology Prof. Ross Weatherman
Views: 3167 Rose-Hulman Online
Iodine Clock Reaction
 
03:13
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: 6192 ISTscience
Combustion Analysis
 
12:39
How to determine the empirical formula of a compound containing carbon and hydrogen using combustion analysis. The empirical formulas of compounds containing carbon, hydrogen, and oxygen can also be determined by combustion analysis.
Views: 121245 Ben's Chem Videos
Kinetics Study on the Reaction between Potassium Iodate and Sodium Sulphite - MeitY OLabs
 
04:47
This video channel is developed by Amrita University's CREATE http://www.amrita.edu/create ▶ For more Information @ http://amrita.olabs.co.in/?sub=73&brch=8&sim=143&cnt=1 ▶ Online Labs for School lab Experiments (Olabs) http://www.olabs.edu.in/ ▶ Learn more about Amrita University http://www.amrita.edu ▶ Subscribe @ http://www.youtube.com/amritacreate https://www.facebook.com/onlinelabs Copyright © 2013 Amrita University Developed by CDAC Mumbai & Amrita University under research grant from Department of IT, Government of India Kinetics Study on the Reaction between Potassium Iodate and Sodium Sulphite :- The rate of a chemical reaction may depend on the concentration of one or more reactants or it may be independent of the concentration of a given reactant. The effect of concentration of the reactant on the rate of a chemical reaction can be studied by analysing the reaction between potassium iodate and sodium sulphite in presence of starch indicator at room temperature and pressure.. In acidic medium, potassium iodate is reduced to iodide ions by sodium sulphite. Iodide ions formed are oxidized to iodine by reaction with more iodate ions. The liberated iodine reacts immediately with sulphite ions forming iodide ions. When sulphite ions are completely consumed, the liberated iodine would react with starch solution, gives blue colour. This video explains how to study the reaction rate of the reaction between potassium iodate and sodium sulphite using starch solution as indicator.
Views: 4582 amritacreate
Chemistry experiment 28 - Iodine clock reaction
 
02:26
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: 148008 koen2all
Titration Calculations
 
02:34
A worked solution involving a titration of NaOH with HCl. Find out the molarity of an unknown solution. Helpful articles: http://www.matrix.edu.au/common-mistakes-year-12-chemistry-students-make-in-t... http://www.matrix.edu.au/chemical-reactions-year-12-chemistry-students-must-k... http://www.matrix.edu.au/how-to-achieve-99-95-atar/ http://www.matrix.edu.au/all-about-atar-scaling/
Views: 347487 Matrix Education
Reaction of Silver Nitrate and Hydrochloric acid
 
00:54
Facebook: https://www.facebook.com/profile.php?id=100016505163491
Views: 549 Science Sir
Acid Base Reaction and Landoldt Iodine Clock Reaction
 
02:45
First reaction is an acid-base indicator reaction with HCl and NaOH. When mixing the acid and base together the pH changes causing a change in color. The second is an Landoldt Iodine Clock Reaction.
Views: 68 Randy Sullivan