Question

What is osmotic pressure of a semi molar solution at 27°C? (R = 0.082)

Options

• 20.5 atm

• 4.96 atm

• 2.46 atm

• 12.3 atm

Answer 1

12.3 atm

Explanation:

Given,

Concentration ( C) = Semi-molar solution that means concentration `1/2`m of solution is half.

T = 27° C = 300 K

R = 0.082

We know that,

osmotic pressure (π) = CRT

`pi = 1/2 xx 0.082 xx 300 = 12.3`atm