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 :
Correct Option: 1
Solution:
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