General Chemistry 2 Equilibrium Equation

Question

Determine if the following salt is neutral, acidic or basic. If acidic or basic, write the appropriate equilibrium equation for the acid or base that exists when the salt is dissolved in aqueous solution. If neutral, simply write only NR. Be sure to include the proper phases for all species within the reaction. (CH₃)₃NHBr

Answer 1

The salt is (CH₃)₃NH⁺Br^-. This salt arises from the reaction of a strong acid (HBr) and a weak base (CH₃)₃N. Thus the pH of the resultant salt will have a pH <7, i.e acidic

Since acidic, we can write the equilibrium equation for the salt when dissolved in water as follows:

(CH₃)₃NH⁺(aq) + H₂O(l) ==> H₃O⁺_(aq) + (CH₃)₃NH(aq)