The solute 'A' is a ternary electrolyte and solute 'B' is a 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. 1.5 P
C. `2 P`
D. `3 P`

Answer

D

Explanation

For `A rArr CRT = 0.05 xx 3 R xx T = 0.15 RT`
for `B rArr 2P_(2)=0.1 xx R xx T`
`pi = (0.1 xx RT)/2 = 0.005 RT`
`:. 0.15 RT equiv 0.05 RT`
`0.15 P_(1) equiv 0.05 P_(2)`
`15 P_(1) = 5 P_(2)`
`:. P_(1) = 3P_(2)`