## General Chemistry: Principles and Modern Applications (10th Edition)

(a) Acids: $HOBr$ and $H_3O^+$; Bases: $OBr^-$ and $H_2O$. (b) Acids: $H{SO_4}^-$ and $H_3O^+$; Bases: ${SO_4}^{2-}$ and $H_2O$. (c) Acids: $H_2S$ and $H_2O$; Bases: $HS^-$ and $OH^-$. (d) Acids: $C_6H_5{NH_3}^+$ and $H_2O$; Bases: $C_6H_5NH_2$ and $OH^-$.
Identify the compounds that are losing a proton during the reaction, these are the acids. The compounds that are gaining a proton during the reaction are the bases. ** Remember to analyze both forward and reverse reactions, like, the $H_3O^+$ is donating a proton in (a) reverse reaction.