`4.5 g` of aluminium (at mass `27 u`) is deposited at cathode from `Al^(3+)` solution by a certain quantity of electric charge. The volume of hydrogen gas produced at `STP` from `H^(+)` ions in solution by the same quantity of electric charge will be:

Options

A. 44.8 L
B. 22.4 L
C. 11.2 L
D. 5.6 L

Answer

D

Explanation

Number of equivalents of aluminium deposited
`=4.5/9=0.5`
`:.` Number of equivalents of `H_(2)` will also be 0.5.
Volume of `H_(2)` gas at STP = Number of equivalents `xx` Equivalent volume
`=0.5xx11.2=5.6 L`