\( \mathrm{E}^{\circ}\left(\mathrm{Ni}^{2+} / \mathrm{Ni}\right)=-0.25 \) volt \( \mathrm{E}^{\c...

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\( \mathrm{E}^{\circ}\left(\mathrm{Ni}^{2+} / \mathrm{Ni}\right)=-0.25 \) volt
\( \mathrm{E}^{\circ}\left(\mathrm{Au}^{3+} / \mathrm{Au}\right)=1.50 \) volt The emf of the voltaic cell.
\( \mathrm{Ni} / \mathrm{Ni}^{2+}(1.0 \mathrm{~M}) \| \mathrm{Au}^{3+}(1.0 \mathrm{~M}) \mid \mathrm{Au} \) is:
 
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