JEE Main & Advanced Chemistry Solutions / विलयन Question Bank Mock Test - Solutions

Solute A is a ternary electrolyte and solute B is non-electrolyte. If 0.1 M solution of solute B produces an osmotic pressure of 2P, then 0.05 M solution of A at the same temperature will produce an osmotic pressure equal to:

A) P

B) 1.5P

C) IP

D) 3P

Correct Answer: D

Solution :

[d] For ternary electrolyte, i=3

\[{{P}_{1}}=iCRT=3\times 0.05\times RT\]

\[{{P}_{1}}=0.15RT\] ...(1)

For B, (non-electrolyte)

\[{{P}_{2}}=CRT\]

\[2P=0.1RT\] ...(2)

Diving (1) and (2)

\[\frac{{{P}_{1}}}{2P}=\frac{0.15}{0.1}\]

\[\Rightarrow {{P}_{1}}=1.5\times 2P=3P\]