What are equilibrium processes? Explain equilibrium in Physical and Chemical processes with examples.

Explanation

In a reversible process, a state will be attained such that the rate of forward reaction is equal to the backward rate of reaction.
Such a state is known as equilibrium state.
Equilibrium processes are of two types.
They are
1. Physical equilibrium process: In such a process, equilibrium occurs in a phase transformation process.
Ex: Solid `hArr` liquid
Solid `hArr` vapour
Vapour `hArr` liquid
2. Chemical equilibrium process: If there exists an equilibrium in between reactants aned products, such reactions are said to be chemical equilibrium process.
1. `N_(2)+3H_(2) hArr2NH_(3)`
2. `2SO_(2)+O_(2) hArr 2SO_(3)`