Define ascorbic acid is determined in a thiosulfate reaction

Reference no: EM13237868

Excess I2 can be used to determine vitamin C levels in solution. Vitamin C reacts in the following manner:

C6H8O6(aq) + I2 ---> C6H6O6(aq) + 2 H+(aq) + 2 I-(aq)

The I2 that did not react with ascorbic acid is then determined in a thiosulfate reaction. If 40.0mL of 0.4445M I2 was added to a sample containing vitamin C, the unused I2 required 19.05mL of 0.142M S2O32- to react. How many moles of vitamin C were originally present?

Reference no: EM13237868

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