On the basis of information available from the reaction \( 4 \mathrm{Al}+3 \mathrm{O}_{2} \right...

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On the basis of information available from the reaction
\( 4 \mathrm{Al}+3 \mathrm{O}_{2} \rightarrow 2 \mathrm{Al}_{2} \mathrm{O}_{3} ; \Delta G=-965 \mathrm{~kJ} / \mathrm{mol} \) of \( \mathrm{O}_{2} \)
The minimum EMF required to carry out electrolysis of \( \mathrm{Al}_{2} \mathrm{O}_{3} \) is
(a) \( 0.833 \mathrm{~V} \)
(b) \( 2.5 \mathrm{~V} \)
(c) \( 5.0 \mathrm{~V} \)
(d) \( 1.67 \mathrm{~V} \)
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