Question

The osmotic pressure of decimolar solution of urea at $27^{\circ }C$ is

• A. 2.49 bar
• B. 5.0 bar
• C. 3.4 bar
• D. 1.25 bar

Answer 1

Answer: (A)

Decimolar
$M=\frac{1}{10},T=27^{\circ }C+273$
$\Rightarrow 300K$
$\pi =i(CRT)$
For urea $i=1$
$\pi =1\times \frac{1}{10}\times 0.0821\times 300$
$\pi =2.4$ bar