Question

Aqueous solutions are separated by semipermeable membrane. For which pair of the given solution having maximum osmotic pressure ? (Assume that ionic solid substances completely dissociates in the solution)

(a)   0.5 m NaCl | 0.1 m Na₂SO₄ 

(b)   0.3 m NaCl | 0.1 m Na₂SO₄

(c)  0.5 m NaCl | 0.1 m FeCl₃

(d)  0.5 m NaCl | 0.1 m sugar

Answer 1

Correct option  (d) 0.5 m NaCl | 0.1 m sugar

Explanation:

Highest osmotic pressure is for that pair having difference between n₁ M₁ and n₂ M₂