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Consider the following cell reaction:
\( 2 \mathrm{Fe}(s)+\mathrm{O}_{2}(g)+4 \mathrm{H}^{+}(a q) \rightarrow 2 \mathrm{Fe}^{2+}(a q)+2 \mathrm{H}_{2} \mathrm{O}(l) ; \mathrm{E}^{\circ}=1.67 \mathrm{~V} \) At \( \left[\mathrm{Fe}^{2+}\right]=10^{-3} \mathrm{M}, \mathrm{p}\left(\mathrm{O}_{2}\right)=0.1 \mathrm{~atm} \) and \( \mathrm{pH}=3 \), the cell potential at \( 25^{\circ} \mathrm{C} \) is
(a) \( 1.47 \mathrm{~V} \)
(b) \( 1.77 \mathrm{~V} \)
(c) \( 1.87 \mathrm{~V} \)
(d) \( 1.57 \mathrm{~V} \)
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