Question

At a certain temperature, the value of the slope of the plot of osmotic pressure $(\pi)$ against concentration $\left(C\right.$ in $mol\, L ^{-1}$ ) of a certain polymer solution is $291\, R$. The temperature at which osmotic pressure is measured, is $(R$ is gas constant)

• A. $271^{\circ} C$
• B. $18^{\circ} C$
• C. $564\, K$
• D. $18\, K$

Answer 1

Answer: (B)

$18^{\circ} C$

Answer 2

Slope, $R T=291\, R$ or $T=291\, K$
$\therefore$ Temperature $=291-273=18^{\circ} C$