(આણ્વિય દળ $\left.\mathrm{H}_{2} \mathrm{SO}_{4}=98 \;\mathrm{g} / \mathrm{mol}\right)$
\(250 \;\mathrm{ml}\) sol. will require \(7.5 \mathrm{m}\; \mathrm{mol} \;\mathrm{HCl}\)
\({\text { or } 3.75 \mathrm{m\;mol}\; \mathrm{H}_{2} \mathrm{SO}_{4}}\)
\({\Rightarrow \frac{3.75 \times 98}{1000} \mathrm{gm} \;\mathrm{H}_{2} \mathrm{SO}_{4}}\)
\({=0.3675 \;\mathrm{gm} \;\mathrm{H}_{2} \mathrm{SO}_{4}}\)
[ આપેલ : પાણીનો મોલલ ઉત્કલનબિંદુ ઉન્નયન અચળાંક $\left(\mathrm{K}_{\mathrm{b}}\right)=0.52 \mathrm{~K} . \mathrm{kg} \mathrm{mol}^{-1}$,
$1 \mathrm{~atm}$ દબાણ $=760 \mathrm{~mm} \mathrm{Hg}$, પાણીનું મોલર દળ $\left.=18 \mathrm{~g} \mathrm{~mol}^{-1}\right]$