Question

please simplify how vapor pressure lowering is related to a rise in the boiling point solution

Answer 1

Vapour pressure means the pressure of the vapour state of the solution just above the liquid solution surface.Greater vapour pressure means greater liquid solution goes to vapour state and apply pressure on it's liquid state surface.So vapour pressure is a escaping perameter of a liquid solution from liquid state to it's vapour state.So more volatile solution will have grater vapour pressure and less volatile solution will have lesser vapour pressure.So as the boiling point increases it will decrease in it's votality so the vapour pressure will be less.