Which of the following is a true statement?

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(C) The reaction between $I_2$ and sodium thiosulphate (commonly known as Hypo,$Na_2S_2O_3$) is a standard redox titration reaction. The reaction is:

Vedclass · Accepted Answer

Hypo can reduce $I_2$

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(C) The reaction between $I_2$ and sodium thiosulphate (commonly known as Hypo,$Na_2S_2O_3$) is a standard redox titration reaction. The reaction is: $2Na_2S_2O_3 + I_2 \rightarrow Na_2S_4O_6 + 2NaI$. In this reaction,$I_2$ acts as an oxidizing agent and is reduced to $I^-$,while the thiosulphate ion $(S_2O_3^{2-})$ acts as a reducing agent and is oxidized to tetrathionate $(S_4O_6^{2-})$. Therefore,Hypo can reduce $I_2$.

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