Given the reaction:

This reaction does not reach a state of dynamic equilibrium because one of the products formed is

A)

an insoluble base

B)

a soluble base

C)

a precipitate

D)

a gas

Answer: D) a gas

Explanation:

Equilibrium state is the state when reactants and products are present but the concentrations does not change with time.

A chemical equilibrium is dynamic in nature forward and backward reactions continue for indefinite time and never stops. Chemical equilibrium is attained in closed system i. e the species present in the system cannot leave.

Thus if the product formed is a gas, it will escape and thus equilibrium will be disturbed.

Thus reaction does not reach a state of dynamic equilibrium because one of the products formed is gas.