Solution:
(i) From given data, we write the equations that can be derived
![\[H_{2} O \rightarrow H_{2}+\frac{1}{2} O_{2}\]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-5b0d68a1cb5aa6a40ec49f5e7385027e_l3.png "Rendered by QuickLaTeX.com")
We can say that :
![\[O^{2-} \rightarrow \frac{1}{2} O_{2}+2 e^{-}\]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-ec21da0884b49d82e973bfb187db85df_l3.png "Rendered by QuickLaTeX.com")
Electricity required for the oxidation of
![\[\begin{aligned}&=2 \times 96487 C \&=192974 C\end{aligned}\]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-4625999cb5ad1092fe2f2765eaa18f5e_l3.png "Rendered by QuickLaTeX.com")
(ii) From given data, we write the equations that can be derived
![\[Fe ^{2+} \rightarrow Fe ^{3+}+e^{-}\]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-63a02ffa1f83eb5ea40b37aa8d39ece8_l3.png "Rendered by QuickLaTeX.com")
Electricity required for the oxidation of
