Question

Does salt lower boiling point?

Answer 1

Addition of a solute, a salt if you like, to a solvent, should increase the boiling point of the solution with respect to the pure solvent.

Explanation:

Boiling point elevation and freezing point depression with respect to the pure solvent, are characteristic properties of solutions; and their measurement can sometimes allow determination of molecular masses. In your text, consult colligative properties.