Which aqueous solutions will exhibit highest boiling point

• Solutions

Which one of the following aqueous solutions will exhibit highest boiling point?

1. 0.01 M KNO₃
2. 0.015 M urea
3. 0.01 M Na₂SO₄
4. 0.015 M glucose

Answer

Elevation in boiling point is a colligative property which depends upon the number of solute particles.

Greater the number of solute particles in a solution, higher the extent of elevation in boiling point.

Na₂SO₄ → 2Na⁺ + SO₄^2–

The correct option is C.