Question

The density of a solution prepared by dissolving 120 g of urea (mol. Mass=60 u) in 1000 g of water is 1.15 g/mL. The molarity if this solution is
A. 0.50 M
B. 1.78 M
C. 1.02 M
D. 2.05 M

Answer 1

Correct Answer - D
Molarity `=("mols of solute")/("volume of sol.(l)")`
`=(120xx1.15)/(60xx1120)xx1000=2.05M`