Ascorbic acid (MW = 176.12 g/mole) is readily oxidized by molecular iodine in the presence of acid as shown in the reaction below: %3D CH2OH CH2OH снон снон H+ + 2 HI но он Once all of the ascorbic acid has reacted with the iodine, any excess iodine will react with a starch indicator to make a purple color, indicating the endpoint. This experiment will use an ascorbic acid solution of known concentration to determine the concentration of iodine. Once that concentration is known, it will be necessary to use that solution to determine the Vitamin C content of a commercial sample, such as orange or apple juice.

Ascorbic acid (MW = 176.12 g/mole) is readily oxidized by molecular iodine in the presence of acid as shown in the reaction below: %3D CH2OH CH2OH снон снон H+ + 2 HI но он Once all of the ascorbic acid has reacted with the iodine, any excess iodine will react with a starch indicator to make a purple color, indicating the endpoint. This experiment will use an ascorbic acid solution of known concentration to determine the concentration of iodine. Once that concentration is known, it will be necessary to use that solution to determine the Vitamin C content of a commercial sample, such as orange or apple juice.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Qq.44. Subject :- Chemistry
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