\(\therefore \;1 \;mole\) of \(\mathrm{HCl}(\mathrm{aq})\) produces \(=\frac{3}{6}\) moles of \(\mathrm{H}_{2}(\mathrm{g})=\frac{1}{2}\; moles\) of \(\mathrm{H}_{2}(\mathrm{g})\)
From avogadro hypothesis we know at \(STP \;1\; mole\) of any as occupies \(22.4 \mathrm{\,L}\)
\(\therefore \frac{1}{2}\) moles of \(\mathrm{H}_{2}(\mathrm{g})\) occupies \(=\frac{1}{2} \times 22.4=11.2 \mathrm{\,L}\)
મોલર દળ $N =14\,g\,mol ^{-1} ; O =16\,g\,mol ^{-1} ; C =12\,g\,mol ^{-1} ; H =1\,g\,mol ^{-1}$;
$\left[\right.$ આપેલ છે $: {N}_{{A}}=6.02 \times 10^{23}\, {~mol}^{-1}$ ,${Na}$નું આણ્વીય દળ $=23.0\, {u}]$