Question

The osmotic pressure of equimolal solutions of glucose, sodium chloride and barium chloride will be in the order ______.

Options

• BaCl₂ > NaCl > Glucose

• BaCl₂ > Glucose > NaCl

• Glucose > BaCl₂ > NaCl

• NaCl > BaCl₂ > Glucose

Answer 1

The osmotic pressure of equimolal solutions of glucose, sodium chloride and barium chloride will be in the order BaCl₂ > NaCl > Glucose.

Explanation:

Osmotic pressure depends on the number of particles Van’t Hoff factor (i).
For equimolal solutions:

Glucose (non-electrolyte): i = 1

NaCl (dissociates into 2 ions): i = 2

BaCl₂ (dissociates into 3 ions): i = 3

Thus, the more particles, the higher the osmotic pressure.