Question 20.12: Calculating the Cell emf for Nonstandard Conditions What is ...

General Chemistry

Calculating the Cell emf for Nonstandard Conditions

What is the emf of the following voltaic cell at 25°C?

$\mathrm{Zn}(s)\left|\mathrm{Zn}^{2+}\left(1.00 \times 10^{-5} M\right) \| \mathrm{Cu}^{2+}(0.100 M)\right| \mathrm{Cu}(s)$

PROBLEM STRATEGY

From the cell reaction, deduce the value of $n$ ; then calculate $Q$ . Now substitute $n$ , $Q$ , and $E_{\text {cell }}^{\circ}$ into the Nernst equation to obtain $E_{\text {cell }}$ .

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