1.

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

Answer»

`1.78 M`
`2.50 M`
`2.05 M`
`2.22 M`

SOLUTION :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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