The standard EMF for the given cell reaction Zn+Cu2+→Cu+Zn2+ is 1.10V at 25∘C. The EMF for the cell reaction, when 0.1MCu2+ and 0.1MZn2+ solutions are used, at 25°C is —-V1.1

The standard $E M F$ for the given cell reaction $Zn + {Cu}^{2 +} \to Cu + {Zn}^{2 +} is 1.10 V at 25^{\circ} C .$ The $E M F$ for the cell reaction, when $0.1 M {Cu}^{2 +}$ and $0.1 M {Zn}^{2 +}$ solutions are used, at 25°C is ----V1.1

Solution:

$\begin{array}{l} E_{cell} = E_{cell}^{o} - \frac{0.059}{2} \log \frac{({Zn}^{+ +})}{({Cu}^{+ +})} \\ = 1.10 - \frac{0.059}{2} \log \frac{0.1}{0.1} = 1.10 V \end{array}$

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