See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

  2 2 3 . 3 2 0 4 16 4 16 3 2 1 20 9 1 20 2 1 10 eq N H NH t t t a a a P R T P a R T a                  On adding 'x' moles of inert gas at constant volume, equilibrium composition does not change   9 1 18 10 1 18 2 P R T P x RT x       