Question

0.1 molar aqueous solution of NaCl and water are separated by semi-permeable membrane at 27ºC.

If external pressure of 3 atm is applied on solution side then  (R = \(\frac{1}{{12}}\) L atm mol^–1 K^–1) :
1. Osmosis will stop.
2. Osmosis will continue.
3. Reverse osmosis will occur.
4. Solute will move from solution to solvent.

Answer 1

Correct Answer - Option 2 : Osmosis will continue.

π = iCRT

= 2 × 0.1 × \(\frac{1}{{12}}\) × 300

= 5 atm

P_ext < O.P. 

Hence net flow of solvent molecules will be from (solvent to solution)