In the reaction:
`2Al_((s))+6HCl_((aq.))rarr2Al_((aq.))^(3+)+6Cl_((aq.))^(-)+3H_(2(g))`

Options

A. (a)6 litres `HCl_((aq.))` is consumed for every `3L H_(2(g))` produced
B. (b)33.6 litres `H_(2(g))` is produced regardless of temperature and pressure for every mole Al that reacts
C. (c )67.2 litres `H_(2)g))` at STP is produced for every mole Al that reacts
D. (d) 11.2 litres `H_(2(g))` at STP is produced for every mole `HCI_((aq.))` consumed

Answer

D

Explanation

`2Al_((s))+6HCl_((aq.))rarr 2Al_((aq.))^(3+)+6Cl_((aq.))^(-)+3H_(2(g))`
For each mole of `HCl` reated, `0.5` mole of `H_(2)` gas is formed at `STP`.
1 mole of an ideal gas occupies 22.4 litres at STP.
Volume of `H_(2)` gas formed at `STP` per mole of `HCl` reacted is `22.4xx0.5` litre.