The concentration of the solute and the rate at which it affects the vapor pressure of the liquid determines how it affects the boiling and freezing point of water.
Explanation:
Solutes affect the boiling and the freezing points of the water because of the presence of the particles of the solute. They result in the decrease in the vapor pressure of the water.
Three solutes that have been mentioned here affect the vapor pressure of the water at different rates, some affect is faster and some affect is comparatively in a slower way which means that they do not affect the boiling point at the same rate.
