Question

14. Molality of an aqueous solution is 10 mol kg The mole fraction of solute in the solution is (A) (C) 0.15 0.75 (B) 0.55 (D) 0.85
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Answer 1

Answer:

I think b option

Explanation:

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Answer 2

Answer:

13.88

Given that

x

B

=0.2,x

A

=0.8

Now,

Molality (m)=

x

A

×M

A

x

B

×1000

=

0.8×18

0.2×1000

=13.88m

where,

M

A

= molar mass of solvent

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