Question

pH of a 0.1 M monobasic acid is found to be 2. Hence its osmotic pressure at a given temp. T K is

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

Answer 1

Answer: (B)

$HA\to H^{+}+A^{-},pH=2$
0.1
$pH=2$ so $[H^{+}]=0.01$
Total Concentration $=0.1+0.01=0.11M$
$\pi =CRT=0.11RT$