Question

A tablet containing 500 mg of vitamin C was titrated with 20.15 ml of KIO3 to the end point. The same KIO3 was used to titrate 12.1 ml of a commercial juice blend. The juice required 2.40 ml of KIO3 to reach the end point. How many mg of Vitamin C are in the sample of juice blend?

Answer 1

To cakculate the amount of Vitamin C in the given sample following equation is derived

Average mL of titrant used for tablet = mL of titrant used for juice

500 mg of vitamin C in tablet               ? mg vitamin C in Juice

? mg vitamin C in Juice = mL of titrant used for juice)(500 mg vitamin C in tablet)

                   Average mL of titrant used fpr tablet                

mg vitamin C in Juice = (500 mg)(2.40)

                                      20.15mL

mg vitamin C in Juice = 59.55 mg

The answer is 59.55 mg of vitamin C in the given juice.