Question

(i) What does the diffusion of gases tell us about their particles?
(ii) Give one example of diffusion of gases in a liquid

Answer 1

(i) Intermixing of two gases to form a homogeneous mixture without any chemical change is called diffusion of gases.

Diffusion of gases tells about their particles as:
The particles move rapidly in all directions as gases have more space and no fixed shape or volume and nor forces of attractions. With the increase in temperature, the particles gain kinetic energy and move faster.
The particles are widely spaced and scattered at random throughout the container. Hence, gases have very low density.
Because of the 'empty' space between the particles, gases are readily compressed.

(ii) Diffusion of oxygen in water is an example of diffusion of gases in liquid. This is important for life forms under water.