Question

Which of the following statements is/are true about equilibrium?

• A. Equilibrium is possible only in a closed system at a given temperature
• B. All the measurable properties of the system remain constant at equilibrium.
• C. Equilibrium constant for the reverse reaction is the inverse of the equilibrium constant for the reaction in the forward direction.
• D.

Hint:

At equilibrium, the properties of the system remain constant, but this does not imply that the system has no motion. It means the rates of forward and reverse reactions are equal.

Answer 1

The Correct Option is B

Statement (a) is true because equilibrium can only be established in a closed system, where the system’s components do not escape.
Statement (b) is true because at equilibrium, properties like concentration, pressure, and temperature remain constant over time.
Statement (c) is true as well. The equilibrium constant for the reverse reaction is indeed the inverse of the equilibrium constant for the forward reaction, i.e., \( K_{\text{reverse}} = \frac{1}{K_{\text{forward}}} \).