Oxidation of Vitamin C w/ Potassium Biodate: A "Write" Reaction

In summary, the purpose of this experiment is to observe and study the process of oxidation of vitamin C with potassium biodate, which results in a "write" reaction. The materials needed for this experiment include vitamin C (ascorbic acid), potassium biodate, a beaker, a stir rod, distilled water, and a burette. To perform the experiment, a solution of vitamin C and potassium biodate is prepared and the potassium biodate solution is added drop by drop while stirring continuously until the solution turns a permanent pink color. The color change in the solution indicates the oxidation of vitamin C and has potential applications in chemistry and nutrition, such as determining vitamin C levels in a sample and understanding the role of antioxidants in food and the human
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Can anyone ''write'' this reaction: oxidation of vitamin c with potassium biiodate?
 
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  • #2
The product of Vitamin C oxidation with iodate is http://en.wikipedia.org/wiki/Dehydroascorbic_acid" .
 
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  • #3


Yes, the oxidation of vitamin C with potassium biiodate can be written as follows:

C6H8O6 + 2KIO3 → 2KIO4 + C6H6O6 + H2O

In this reaction, vitamin C (ascorbic acid) is oxidized to dehydroascorbic acid, while potassium biiodate is reduced to potassium iodate. The presence of potassium ions (K+) acts as a catalyst for the reaction. This reaction is commonly used in titration experiments to determine the vitamin C content in various substances.
 

1. What is the purpose of this experiment?

The purpose of this experiment is to observe and study the process of oxidation of vitamin C with potassium biodate, which results in a "write" reaction. This reaction is important because it can help us understand the chemical properties and behavior of vitamin C, which is an essential nutrient for humans.

2. What materials are needed for this experiment?

The materials needed for this experiment include vitamin C (ascorbic acid), potassium biodate, a beaker, a stir rod, distilled water, and a burette. Optional materials may include a pH indicator and a spectrophotometer for further analysis.

3. How do you perform the experiment?

To perform the experiment, first prepare a solution of vitamin C and potassium biodate in a beaker, using distilled water as a solvent. Then, add a few drops of a pH indicator (if using) and stir the solution. Next, add the potassium biodate solution drop by drop from a burette to the vitamin C solution while stirring continuously. Observe the color change and record the volume of potassium biodate solution added. Repeat this process until the solution turns a permanent pink color.

4. What is the significance of the color change in the solution?

The color change in the solution from colorless to pink indicates the oxidation of vitamin C by potassium biodate. This color change is due to the formation of dehydroascorbic acid, which has a pink color. The more pink the solution becomes, the more vitamin C has been oxidized.

5. What are the potential applications of this experiment?

This experiment has various potential applications in chemistry and nutrition. It can be used to determine the amount of vitamin C in a sample, as well as the effectiveness of different storage methods for preserving vitamin C levels in food. Additionally, this experiment can help us understand the role of antioxidants in food and the human body.

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