Q.

Mole fraction of a solute in an aqueous solution is 0.2.The molality of the solution will be

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a

13.88

b

1.388

c

0.138

d

0.0138

answer is A.

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Detailed Solution

χB=0.2,χA=0.1m=χB×1000χA×MwA=0.2×10000.8×18=13.88
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Mole fraction of a solute in an aqueous solution is 0.2.The molality of the solution will be