The mole fraction of the solute in one molal aqueous solution is\

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Professor PC Thomas Classes · Answer

(b) : 1 molal aqueous solution means 1 mole of solute present in 1 kg of $\mathrm{H}_{2} \mathrm{O}$.\ 1 mole of solute present in $\frac{1000}{18}$ mole of $\mathrm{H}_{2} \mathrm{O}$\ $x_{	ext {solute }}=\frac{1}{\frac{1000}{18}+1}=\frac{18}{1018}=0.01768 \approx 0.018$\