Question

1.) In order to appreciably influence the vapor pressure of a liquid mixture a substance must form a

A) true solution

B) colloidal dispersion

C) coarse suspension

D) inanimate solution

E) animate solution

2.) Substances that form coarse suspensions have a greater effect on the temperature of the boiling mixture than do those forming true solutions

True or false?

Answer 1

1. B) Colloidal dispersion

Through ecxpreimental measurements, the particle size of colloids are ideal in the lowering of vapor pressure as compared to suspensions and solutions

2. True

Coarse suspensions have particles of significant mass. these can absorb heat like normal masses sometimes even better than the solvent leading to a change in the boiling point. at such a macroscopic level, physical properties are expected to change