Solutions Question 258

Question: 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:

Options:

A) P

B) 1.5P

C) IP

D) 3P

Show Answer

Answer:

Correct Answer: D

Solution:

For ternary electrolyte, i=3 P1=iCRT=3×0.05×RT
P1=0.15RT …(1)

For B, (non-electrolyte) P2=CRT 2P=0.1RT …(2) Diving (1) and (2) P12P=0.150.1

P1=1.5×2P=3P



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