Question

Why does antifreeze also raise the boiling point of water?

Answer 1

Any solution has a lower melting point (the purpose of 'anti-freeze) and a higher boiling point than the pure solution.

Explanation:

A solute (the stuff that is dissolved) forms weak bonds with the solution particles, making it more difficult for them to escape (boiling) from the surface or arrange themselves into a regular pattern (freezing.)