In the reaction HAsO_2 + Sn^{2+} to As + Sn^{ | vedclass

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(D) An oxidizing agent is a substance that undergoes reduction (decrease in oxidation state) during a redox reaction.In the given reaction: $\mathop {

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$HAsO_2$

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(D) An oxidizing agent is a substance that undergoes reduction (decrease in oxidation state) during a redox reaction.In the given reaction: $\mathop {HAsO_2}\limits^{+3} + \mathop {Sn}\limits^{+2} 	o \mathop {As}\limits^{0} + \mathop {Sn}\limits^{+4} + H_2O$$1$. The oxidation state of $As$ changes from $+3$ in $HAsO_2$ to $0$ in $As$. Since the oxidation state decreases,$HAsO_2$ is reduced.$2$. The oxidation state of $Sn$ changes from $+2$ in $Sn^{2+}$ to $+4$ in $Sn^{4+}$. Since the oxidation state increases,$Sn^{2+}$ is oxidized.Therefore,$HAsO_2$ acts as the oxidizing agent.

In the reaction $HAsO_2 + Sn^{2+} \to As + Sn^{4+} + H_2O$,the oxidizing agent is:

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