What is the standard potential of cell $\mathrm{Ni}\left|\mathrm{Ni}^{2+}{ }_{(1 \mathrm{M})} \|…

What is the standard potential of cell $\mathrm{Ni}\left|\mathrm{Ni}^{2+}{ }_{(1 \mathrm{M})} \| \mathrm{Cu}^{2+}{ }_{(1 \mathrm{M})}\right| \mathrm{Cu}$ If $\mathrm{E}^{\circ} \mathrm{Cu}=0 \cdot 337 \mathrm{~V}$ and $\mathrm{E}^{\circ} \mathrm{Ni}=-0 \cdot 236 \mathrm{~V}$
  1. $0 \cdot 101 \mathrm{~V}$
  2. $-0 \cdot 136 \mathrm{~V}$
  3. $0.573 \mathrm{~V}$
  4. $-0.753 \mathrm{~V}$

Solution

$\begin{aligned} \mathrm{E}_{\text {ceil }}^{0} &=\mathrm{E}_{\text {cuthode }}^{0}-\mathrm{E}_{\text {anode }}^{0}=\mathrm{E}_{\mathrm{Cu}}^{0}-\mathrm{E}_{\mathrm{Ni}_{\mathrm{i}}}^{0} \\ &=0.337 \mathrm{~V}-(-0.236 \mathrm{~V})=0.573 \mathrm{~V} \end{aligned}$

Asked in: MHT CET 2020 (13 Oct Shift 1)

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