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Question
The mole fraction of the solute molal aqueous solution is:
Options
0.09
0.018
0.027
0.036
MCQ
Solution
0.018
Explanation:
Mole fraction `=n_"(solute)"/(n_"(solute)"+ n_"(solvent)")`
Here, n(solute) = 1 mol
`n_"(solvent)" = 1000/18 = 55.55` mol
∴ Mole fraction `= 1/(1+ 55.55) = 1/56.55 = 0.018`
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