Given below are two statements:
Statement I: $2 ext{ F}$ electricity is required for the oxidation of $1 ext

Question

Given below are two statements:
Statement I: $2	ext{ F}$ electricity is required for the oxidation of $1	ext{ mole H}_2	ext{O}$ to $	ext{O}_2$.
Statement II: To get $40.0	ext{ g}$ of Aluminium from molten $	ext{Al}_2	ext{O}_3$ required electricity is $4.44	ext{ F}$.
In the light of the above statements, choose the correct answer from the options given below:

Accepted Answer

Statement I: The oxidation of water is represented by the equation:
$	ext{H}_2	ext{O} ightarrow \frac{1}{2}	ext{O}_2 + 2	ext{H}^+ + 2	ext{e}^-$
For $1	ext{ mole}$ of $	ext{H}_2	ext{O}$, $2	ext{ moles}$ of electrons are involved. Thus, $2	ext{ F}$ of electricity is required. So, Statement I is true.

Statement II: The reduction of Aluminium from molten $	ext{Al}_2	ext{O}_3$ is:
$	ext{Al}^{3+} + 3	ext{e}^- ightarrow 	ext{Al}$
$3	ext{ F}$ of electricity is required to produce $1	ext{ mole}$ ($27	ext{ g}$) of $	ext{Al}$.
To produce $40.0	ext{ g}$ of $	ext{Al}$, the required electricity $= \frac{3	ext{ F}}{27	ext{ g}} 	imes 40.0	ext{ g} = 4.44	ext{ F}$.
So, Statement II is also true.

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