What is an equilibrium process?

Hint:The name is self-explanatory; equilibrium is the state which is stable and does not require any changes at that point. More specifically, the forward and backward movements are then balanced and does not require any movement further.

Complete step-by-step answer:Let us look into some specific points related to equilibrium;
Equilibrium-
The process in which the stability of the mobile things is obtained is known as equilibrium in general. Many processes taking place in nature are measured on the basis of equilibrium they attain after some time being.
In terms of chemistry;
The equilibrium is attained when the reaction undertaking some reactants and getting converted to products; does not move in either of the directions further i.e. forward and reverse directions.
There are many types of equilibrium processes i.e. thermal equilibrium, mechanical equilibrium, static equilibrium, dynamic equilibrium, etc. having the specific properties listed under them.
Concentrating on chemical equilibrium;
It is represented by the double headed arrow showing the state of equilibrium within the process (considering A and B). This can be shown as;
\[A\rightleftarrows B\]

Note:Do note that the equilibrium condition exists in relation to thermal and mechanical changes along with the chemical changes.
Also, the equilibrium is expressed on a piece of paper in the form of mathematical equations and most importantly, the process of equilibrium follows every rule of basic mathematics.