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An aqueous solution of non-electrolyte '...

An aqueous solution of non-electrolyte 'A' with molecular mass 60 contains 6g in 500mL and has a density equal to `1.05g mL^(-1)`. The molality of solution is

A

`1.25`

B

`0.19`

C

`0.25`

D

`0.30`

Text Solution

Verified by Experts

The correct Answer is:
B
Mass of solution `= 500 xx 1.05 = 525g`
Mass of solvent `= 525 - 6 = 519 g`
Molality `= (6 xx 1000)/(60 xx 519) = 0.192M`
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