A) \[1.78\text{ }M\]
B) \[2.00\text{ }M\]
C) \[2.05\text{ }M\]
D) \[2.22M\]
Correct Answer: C
Solution :
Molarity \[=\frac{Moles\,of\,solute}{Volume\,of\,solution\,in\,litre}\] Number of moles of urea \[=\frac{120}{60}=2\] Weight of solution = weight of solute + weight of solvent \[=120\text{ +}1000=1120\text{ }g\] Volume\[=\frac{1120}{1.15g/ml}\times \frac{1}{1000ml/L}=0.974L\] Molarity \[=\frac{2}{0.974}=2.05\,M\]You need to login to perform this action.
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