Question

Explain the process of boiling on the basis of kinetic theory.

Answer 1

1. The change of liquid to vapors on heating at a constant temperature is called boiling.
2. Kinetic energy is given by K.E =$\frac{1}{2}m{v}^2$ , the more the speed of molecules more the kinetic energy.
3. Heating of the liquid increases the average kinetic energy of liquid molecules and molecules acquire sufficient kinetic energy needed to overcome the force of attraction of other molecules.
4. These molecules start leaving the liquid not only at the surface but also near the walls of the containing vessel and bubbles are seen on the walls of the vessel.
5. This causes the agitation in the whole of the liquid and this is called boiling.