Answer: The dissociation of the base will be further suppressed.
Explanation: Any change in the equilibrium is studied on the basis of Le-Chatelier's principle.
This principle states that if there is any change in the variables of the reaction, the equilibrium will shift in the direction to minimize the effect.
For the given equation:
\(NH_4OH(s)\rightleftharpoons NH_4^+(aq)+OH^-(aq)\)
If an excess of ammonium salt, such as \(NH_4Cl\) (which ionizes to give \(NH_4^+\)(aq) ions)
\(NH_4Cl\rightarrow NH_4^++Cl^-\)
If the concentration of \(NH_4^+\) that is the product is increased, so according to the Le-Chatelier's principle, the equilibrium will shift in the direction where decrease of concentration of \(NH_4^+\) takes place. Therefore, the equilibrium will shift in the backward direction and the ions will start associating to form \(NH_4OH\).
