Discussion- Experiment 10

Discussion- Experiment 10 - Discussion: Oxidation of...

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Discussion: Oxidation of Vitamin C In this experiment we were experimenting to see the oxidation of Vitamin C which makes it an excellent antioxidant, if heating Vitamin C will degrade the amount of Vitamin C or effect its use as a antioxidant, and to calculate the amount of ascorbic acid in Vitamin C. In Part One of this experiment we titrated a solution of ascorbic acid, DI water, potassium iodide, hydrochloric acid, and starch solution with potassium iodate until it reached the end point. The calculated mass of ascorbic acid from trial one was 0.343g and from trial two was 0.391 g. Trial one’s calculated value when compared to the initial mass of ascorbic acid had a 18.1% difference. Trial two’s calculated value when compared to the initial mass of ascorbic acid had a 3.58% difference. We knew we had reached the end point in the titrations because the solution would turn a blue-purple. When all the ascorbic acid is reacted, the concentration of iodine increases and reacts
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This note was uploaded on 05/06/2011 for the course CHEM 1BL taught by Professor Davis during the Spring '08 term at UCSB.

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