In which of the following reactions,O_2 is no | vedclass

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(D) Let us analyze each reaction for the liberation of $O_2$:$A$. $2MnO_4^{-} + 5H_2O_2 + 6H^{+} \longrightarrow 2Mn^{2+} + 5O_2 + 8H_2O$. Here,$O_2$

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$Fe^{2+}_{(aq)} + H^{+}_{(aq)} + H_2O_2 \longrightarrow$

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(D) Let us analyze each reaction for the liberation of $O_2$:$A$. $2MnO_4^{-} + 5H_2O_2 + 6H^{+} \longrightarrow 2Mn^{2+} + 5O_2 + 8H_2O$. Here,$O_2$ is liberated.$B$. $H_2O_2 + I_2 + 2OH^{-} \longrightarrow 2I^{-} + 2H_2O + O_2$. Here,$O_2$ is liberated.$C$. $HOCl + H_2O_2 \longrightarrow H_3O^{+} + Cl^{-} + O_2$. Here,$O_2$ is liberated.$D$. $2Fe^{2+} + H_2O_2 + 2H^{+} \longrightarrow 2Fe^{3+} + 2H_2O$. In this reaction (Fenton's reagent),$H_2O_2$ acts as an oxidizing agent and is reduced to water; $O_2$ is not liberated.Therefore,the correct option is $D$.

In which of the following reactions,$O_2$ is not liberated?

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