Question

Colligative properties depend on ____________.

• A. The nature of the solute particles dissolved in solution.
  
• B. The physical properties of the solute particles dissolved in solution.
• C. The number of solute particles in solution.
  
• D. The nature of solvent particles.
  

Answer 1

The correct option is C The number of solute particles in solution.


Colligative properties of solutions are the properties that depend on the concentration of solute molecules or ions and not on the identity of the solute.
The following four properties are colligative properties:

(i) Relative Lowering of the vapour pressure of the solvent.

(ii) Elevation in the boiling point of the solvent.

(iii) Depression in freezing point of the solvent.

(iv) Osmotic pressure.

These properties depend on number of particles and not on nature of particles dissolved.

Hence, option (B) is correct.