Question

On the basis of the information available from the reaction $H^{+}$ of $Ag^{+}$_, the minimum emf required to carry out an electrolysis of $O_{2}$ is

(F = 96500C $MnO_{4}^{-} + 8H^{+} + 5e^{-} \rightarrow Mn^{2 +} + 4H_{2}O;Eº = 1.51V$).

• A. 8.56 V
• B. 2.14 V
• C. 4.28 V
• D. 6.42 V

Answer 1

Answer: (B)

2.14 V

Answer 2

$V = \frac{827 \times 10^{3}}{4 \times 96500} = 2.14V$.