Question

Which statement describes a chemical reaction at equilibrium?(1) The products are completely consumed in the reaction.

Answer 1

The statement that describes a chemical reaction at equilibrium is 4) The concentrations of the products and reactants are constant.

Answer 2

Answer: Option (3) is the correct answer.

Explanation:

An equilibrium reaction is a reaction in which the concentration of both reactant and products is the same.

That is, the rate of forward reaction is equal to the rate of backward reaction.

For example, $2SO_{2}(g) + O_{2}(g) \rightleftharpoons 2SO_{3}(g)$

Thus, we can conclude that out of the given options, statement the concentrations of the products and reactants are equal, describes a chemical reaction at equilibrium.