At `300K`, two solutions of glucose in water of concentration `0.01M` and `0.001M` are separated by semipermeable membrane. Pressure needs to be applied on which solution, to prevent osmosis? Calculate the megitude of this applied pressure?

Explanation

`pi=CRT`
For 0.01 M solution, `pi_(1)=0.01xx0.821xx300="0.2463 atm"`
For 0.001 M solution, `pi_(2)=0.001xx0.821 xx300="0.02463 atm"`
As movement of solvent molecules occurs from dilute to concentration solution, pressure should be applied on concentrated solution, i.e., on 0.01 M solution to prevent osmosis.
Magnitude of external pressure `=0.2463-0.0246="0.2217 atm"`