Question

Ammonia is a weak base that reacts with water according to this equation: NH3(aq)+H2O(l)<-->NH4+ + OH-(aq). Will any of of the following incrase the percentage of ammonia that is converted to the ammonium ion in water. a) Addition of NaOH b) Addition of HCl c) Addition of NH4Cl

Answer 1

Ans :-

(a). Addition of NaOH and

(c). Addition of NH₄Cl

Shifts the equilibrium towards backward side, therefore percentage of NH₃ increases.

Because, with the addition of NaOH , concentration of OH^- ion on the products side increases, due to that equilibrium shifts in backward direction.

Similarly, addition of NH₄Cl increase the concentration of NH₄⁺ on the products side, therefore equilibrium will shifts in backward side.

Hence, Percentage of NH₃ increases.