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Which is correct for cell reaction?

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Neither 1 nor 2

$Zn + 2 {Ag}^{+} ⟶ {Zn}^{2 +} + 2 Ag$

$2 Ag + {Zn}^{+} ⟶ 2 {Ag}^{+} + Zn$

Both 1 and 2

answer is A.

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Detailed Solution

$E_{Z n^{2 +} / Z n}^{o} = - 0.76 V A g_{C u 2 + / C u}^{0} = + 0.80 V$

As SRP of Ag is greater than Zn ,

Ag will oxidise itself and reduces Zn²⁺.

Hence , $2 A g + Z n^{2 +} \to Z n + 2 A g^{+}$ is possible

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