Question: $8 \mathrm{~g}$ of $\mathrm{NaOH}$ is dissolved in $18 \mathrm{~g}$ of $\mathrm{H}_{2} \mathrm{O}$. Mole fraction of $\mathrm{NaOH}$ in solution and molality (in $\mathrm{mol} \mathrm{kg}-1$ ) of the solutions respectively are :
$0.167,11.11$
$0.2,22.20$
$0.2,11.11$
$0.167,22.20$
Correct Option: 1
Solution:
