Question

Arrange the following solutions as directed:

1 M KCl, 1 M BaCl₂, 1 M glucose (in the order of increasing boiling points)

Explain the reason for your answers also.

Answer 1

1 M glucose < 1 M KCl < 1 M BaCl₂

Reason:

Boiling point elevation is a colligative property. It depends on the number of solute particles in solution. Since BaCl₂ dissociates into the most ions, it causes the highest elevation, followed by KCl, and then glucose, which does not dissociate.