Question

The equilibrium constant for a reaction at room temperature is K₁ and that at 700 K is K₂. If K₁ > K₂ then 

(a) The forward reaction is exothermic 

(b) The forward reaction is endothermic 

(c) The reaction does not attain equilibrium 

(d) The reverse reaction is exothermic

Answer 1

(a) The forward reaction is exothermic

T₁ = 25 + 273 = 298 K, T₂ = 700 K

In this case, T₂ > T₁ and K₁ > K₂

ΔH° is – ve i.e., forward reaction is exothermic.