Question

For an exothermic reaction, the equilibrium constant :

• A. increases with increase of temperature
• B. decreases with increase of temperature
• C. increases with increase of pressure
• D. decreases with increase of pressure

Answer 1

The correct option is B decreases with increase of temperature

When the temperature of an exothermic reaction is increased, the reaction will proceed in the backward direction, so as to absorb heat and nullify the effect of increasing temperature.

This will decrease the value of the equilibrium constant $K_c$. In other words, the equilibrium will shift to left.

Hence, $B$ is the correct option.