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An aqueous solution of urea containing 6...

An aqueous solution of urea containing 6 g in 500 ml has a density equal to 1.05. If the molar mass of urea is 60, then the molality of the solution is :

A

0.193 M

B

0.190 M

C

0.20 M

D

0.10 M

Text Solution

Verified by Experts

The correct Answer is:
A
Mass of solution `=500 ml xx (1.05 "g ml"^(-1))`
`=525g`
Mass of solvent `=525-6=519g`
Urea`=6g=6/60`mole
Molality `=(6xx1000)/(60xx519)=0.193`m .
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