Question

$N_2\left(g\right)+3H_2\left(g\right)\rightleftharpoons 2N{H}_3\left(g\right)$

Which of the following will not have any effect on the position of equilibrium?

• A. addition of catalyst
• B. addition of inert gases at constant volume
• C. addition of inert gases at constant pressure
• D. both A and B

Answer 1

The correct option is D both A and B

a) catalyst does not have any effect on the position of equilibrium. It only helps to reach the equilibrium faster.

b) addition of inert gases at constant volume will result increase of total pressure. However partial pressures of the reactants and products remain the same and hence has no effect.

C) addition of inert gases at constant pressure will result in the decrease partial pressures of the reactants and products remain the same and hence the reaction is shifted to the side that has more number of moles.