Question

In the reaction at constant volume $ C(s) +CO_{2}(g) {\rightleftharpoons} 2CO (g) $
Argon gas is added which does not take part in the reaction; choose the correct statement

• A. the equilibrium constant is unchanged
• B. the equilibrium shifts in the forward direction
• C. the equilibrium shifts in the backward direction
• D. the direction of equilibrium depends on the amount of argon added

Answer 1

Answer: (A)

Equilibrium constant depends only upon temperature, not on the concentration. Thus, it remains unchanged when an inert gas like argon is added
Further, argon is added at the constant volume, i.e., the relative molar concentration of the substance will not change. Hence, the equilibrium position of the reaction remains unaffected