Question

what is the critical phenomenon?(in physical chemistry)

Answer 1

Critical phenomena

The unusual physical properties displayed by substances near their critical points. The study of critical phenomena of different substances is directed toward a common theory.

Answer 2

Explanation:

The phenomenon of a smooth merging of a gas into its liquid state under a critical state or critical point is referred to as 'critical phenomenon'. ... The volume occupied by one mole of a gas at its critical temperature and critical pressure is called the critical volume and is denoted by Vc.