Which one is used as a reagent in iodine titrations ?
A. `NaSO_3`
B. `H_2SO_3`
C. `Na_2S_2O_3. 5H_2O`
D. `NaHSO_3`

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1 Answers

Correct Answer - C
`Na_2S_2O_3. 5H_2O` (hypo) is used in iodine titrations

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