Explain the mixture titrated to a starch endpoint

Reference no: EM13532103

Calculate the weight percent of ascorbic acid in a tablet of Vitamin C from the following data:

A 136.6 mg sample of a crushed Vitamin C tablet was dissolved in 40 mL of H2SO4 and 20 mL of water. Two grams of KI and 25.00 mL of 0.0155 M KIO3 solution was added, and the mixture titrated to a starch endpoint. The titration required 20.34 mL of 0.0491 M thiosulfate solution.

Reference no: EM13532103

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Explain the mixture titrated to a starch endpoint : A 136.6 mg sample of a crushed Vitamin C tablet was dissolved in 40 mL of H2SO4 and 20 mL of water. Two grams of KI and 25.00 mL of 0.0155 M KIO3 solution was added, and the mixture titrated to a starch endpoint.

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