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CHEMISTRY · Single correct · CBSE · Chemistry · Redox Reactions · Redox Reactions

Problem

2\text{Cu}^{2+} + 5\text{I}^- \longrightarrow 2\text{CuI} \downarrow + [\text{X}]

[\text{X}] + 2\text{S}_2\text{O}_3^{2-} \longrightarrow 3[\text{Y}] + \text{S}_4\text{O}_6^{2-}

;

\text{X}

and

\text{Y}

are: (1)

\text{I}_3^-

and

\text{I}^-

(2)

\text{I}_2

and

\text{I}_3^-

(3)

\text{I}_2

and

\text{I}^-

(4)

\text{I}_3^-

and

\text{I}_2

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