Question

pH of a $0.1\, M$ monobasic acid is found to be $2$. Hence, its osmotic pressure at a given temperature $TK$ is

• A. 0.1 RT
• B. 0.11 RT
• C. 1.1 RT
• D. 0.01 RT

Answer 1

Answer: (B)

0.11 RT

Answer 2

$pH =2$ $\left[ H ^{+}\right]=0.01 \,M = Cx =0.1 x$ $x =0.1$ $i =1+ x =1.1$ $\pi=i \frac{n}{V} R T=i M R T$ $=1.1 \times 0.1 \,R T=0.11 \,R T$