Salts of Strong Acid and Strong Base

Consider $NaOH(aq)+HNO_3(aq) \rightarrow NaNO_3(aq)+H_2O(l)$. The salt $NaNO_3$ dissociates completely, $NaNO_3(aq) \rightarrow Na^+(aq)+NO_3^-(aq)$. $NO_3^-$ is the conjugate base of the strong acid $HNO_3$ and so has no real tendency to react with $H^+$; $Na^+$ is the conjugate acid of the strong base $NaOH$ and has no real tendency to react with $OH^-$. Since neither ion reacts with water, there is no hydrolysis: $[H^+]=[OH^-]$ (as in pure water) is maintained, and the resulting solution is neutral. …