Stuck on 3a A solution of I_2 was standardized with ascorbic acid. Using a 0.100
ID: 507555 • Letter: S
Question
Stuck on 3a A solution of I_2 was standardized with ascorbic acid. Using a 0.1000-g sample of pure ascorbic acid, 25.32 mL of I_2 were required to reach the starch end point. a. What is the molarity of the iodine solution? b. What is the titer of the iodine solution? A sample of fresh grapefruit juice was ltered and titrated with the above I_2 solution. A 100-mL sample of the juice took 9.85 mL of the iodine solution to reach the starch end point. a. What is the concentration of vitamin C in the juice in mg vitamin C/100 mL of juice? ___mg/100 mL b. What quantity of juice will provide the RDA amount of vitamin C?Explanation / Answer
answer ) The concentration of vitamin C per 100 ml of juice is 38mg/100ml.
The nutritional value that is contained in the fresh grape juice is the basis for the concentration of vitamin C.
vitamin C concentration in the juice depends on the amount of juice present.