1.

Dissolving 120g of urea (mol.wt.60) in 1000g of water gave a solution of density 1.15 g/mL. The molarity of the solution is

Answer»

1.78 M
2.00 M
2.05 M
2.22 M

SOLUTION :Mole `=(120)/(60)=2`
mass of solution = 1120 g
`V=(1120)/(1.15xx100)=(112)/(115)L`
`M=(2xx115)/(112)=2.05` mol/litre


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