\( 2 \mathrm{Ce}^{4+}+\mathrm{Co}(\mathrm{s}) \rightarrow 2 \mathrm{Ce}^{3+}+\mathrm{Co}^{2+} \)...
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0\( 2 \mathrm{Ce}^{4+}+\mathrm{Co}(\mathrm{s}) \rightarrow 2 \mathrm{Ce}^{3+}+\mathrm{Co}^{2+} \)
\( \mathrm{E}_{\text {cell }}^{0}=1.89 \mathrm{~V}, \mathrm{E}_{\mathrm{Co}^{2+} / \mathrm{Co}}^{0}=-0.277 \mathrm{~V} \). Hence, \( \mathrm{E}_{\mathrm{Ce}^{4+} / \mathrm{Ce}^{3+}}^{0} \) is:
(a) \( 0.805 \mathrm{~V} \)
(b) \( 1.613 \mathrm{~V} \)
(c) \( -0.805 \mathrm{~V} \)
(d) \( -1.613 \mathrm{~V} \)
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