Which one of the following statements is incorrect about chemical equilibrium?

Question

Which one of the following statements is incorrect about chemical equilibrium? (A) Chemical equilibrium is attained whether we start with reactants or products (B) Chemical equilibrium is dynamic in nature (C) Chemical equilibrium, CaCO 3(s) leftharpoons CaO (s)+ O 2(g) is attained, when CaCO 3(s) is heated in an open vessel (D) At equilibrium, the concentration of each of the reactants and products becomes constant.

Tardigrade Admin · Accepted Answer

Statement (c) is incorrect. It's correct form is as follows: Chemical equilibrium cannot take place in an open vessel if one of the reactants or products is a gas. Rest other statements are correct.

Q. Which one of the following statements is incorrect about chemical equilibrium?

Chemical equilibrium is attained whether we start with reactants or products

Chemical equilibrium is dynamic in nature

Chemical equilibrium, $C a C O_{3} (s) ⇌ C a O (s) + O_{2} (g)$ is attained, when $C a C O_{3} (s)$ is heated in an open vessel

At equilibrium, the concentration of each of the reactants and products becomes constant.

Statement (c) is incorrect.
It's correct form is as follows :
Chemical equilibrium cannot take place in an open vessel if one of the reactants or products is a gas.
Rest other statements are correct.