Question

Equilibrium constant for a reaction is 10. What will be the equilibrium constant for the reverse reaction?

Answer 1

1/10

for backward reaction

Answer 2

The equilibrium constant for the reverse reaction is 0.1.

This can be determined as follows:

Let Kc be the equilibrium constant of the forward reaction and Kc' be the equilibrium constant of the reverse reaction.

The relation between the equilibrium constant of a forward reaction and the equilibrium constant of a reverse reaction is given as :

Kc' = 1/Kc

Therefore, the required answer(Kc') is :

1 ÷ 10 = 0.1.