Which of the following is a redox reaction?

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(D) redox reaction is one in which there is a change in the oxidation state of the elements involved.In option $D$,the reaction is $Zn + 2 AgCN \longr

Vedclass · Accepted Answer

$Zn + 2 AgCN \longrightarrow 2 Ag + Zn(CN)_2$

Vedclass · Answer

(D) redox reaction is one in which there is a change in the oxidation state of the elements involved.In option $D$,the reaction is $Zn + 2 AgCN \longrightarrow 2 Ag + Zn(CN)_2$.The oxidation state of $Zn$ changes from $0$ (in elemental form) to $+2$ (in $Zn(CN)_2$),which is oxidation.The oxidation state of $Ag$ changes from $+1$ (in $AgCN$) to $0$ (in elemental form),which is reduction.Since both oxidation and reduction occur,this is a redox reaction.Options $A$,$B$,and $C$ are double displacement reactions where no change in oxidation state occurs.

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