Question

Which one of the following set phenomena would increase on raising the temperature?

(a) diffusion, evaporation, compression of gases

(b) evaporation, compression of gases, solubility

(c) evaporation, diffusion, expansion of gases

(d) evaporation, solubility, diffusion, compression of gases

Answer 1

(c) Evaporation, diffusion and expansion of gases increase on raising the temperature. Evaporation rate increases because of increasing temperature, the kinetic energy of molecules increases, so the molecules present at the surface of the liquid leave the surface quickly and go into the vapour state. Diffusion and expansion of gases also increase as the molecules move more rapidly and try to occupy more space.