At 298 K, the standard electrode potentials of Cu^2+/Cu,… — NEET 2022 Chemistry PYQ

NEET 2022

At 298 K, the standard electrode potentials of

\text{Cu}^{2+}/\text{Cu}

\text{Zn}^{2+}/\text{Zn}

\text{Fe}^{2+}/\text{Fe}

and

\text{Ag}^+/\text{Ag}

are 0.34 V, –0.76 V, –0.44 V and 0.80 V, respectively.
On the basis of standard electrode potential, predict which of the following reaction cannot occur?

A.
$\text{CuSO}_4(aq) + \text{Zn}(s) \rightarrow \text{ZnSO}_4(aq) + \text{Cu}(s)$
B.
$\text{CuSO}_4(aq) + \text{Fe}(s) \rightarrow \text{FeSO}_4(aq) + \text{Cu}(s)$
C.
$\text{FeSO}_4(aq) + \text{Zn}(s) \rightarrow \text{ZnSO}_4(aq) + \text{Fe}(s)$
D.
$2\text{CuSO}_4(aq) + 2\text{Ag}(s) \rightarrow 2\text{Cu}(s) + \text{Ag}_2\text{SO}_4(aq)$

Show answer

Correct option: D

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