Question

Which of the following is/are true concerning a chemical reaction at equilibrium? 1. The system will be a mixture of reactant and products. 2. The rate of the forward and reverse reactions are equal. 3. The amount of each reactant and product is constant. a. 1 only b. 2 only c. 3 only d. 1 and 2 e. 1, 2, and 3

Answer 1

Answer: Option (e) is the correct answer.

Explanation:

An equilibrium reaction is defined as the reaction where rate of forward reaction will be equal to the rate of backward reaction.

For example, $N_{2}(g) + 3H_{2}(g) \rightleftharpoons 2NH_{3}(g)$

So, here amount of reactants that is, nitrogen gas and hydrogen gas  will be constant along with constant amount of formation of product that is, ammonia here.

In an equilibrium reaction there is presence of both reactants and products and hence, both reactants and products constitute the system.

Thus, we can conclude that all the given statements are true.