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Q.

The mole fraction of solvent in 0.1 molal aqueous solution is

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a

0.9982

b

0.0017

c

0.17

d

0.017

answer is A.

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Detailed Solution

$X_{s} = \frac{m}{m + (\frac{1000}{MW of solvent})} = \frac{0.1}{0.1 + (\frac{1000}{18})} = 0.0017 X_{o} = 1 - X_{s} = 0.9982$

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