Dissolving 120 gm of urea in 100 gm of w...

Dissolving 120 gm of urea in 100 gm of water gave a solution of density `1.15 gm "lit"^(-1)`. The molarity of the solution is

A

`1.78 M`

B

`2.50 M`

C

`2.05 M`

D

`2.22 M`

Verified by Experts

The correct Answer is:

C

Mass of solution = 1012 gm
volume of solution = `(1012)/(1.15)=973.91 gm ml^(-1)`
Molarity = `(2)/(0.974)=2.05M`

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