## Chemistry: The Central Science (13th Edition)

$(i) : {HSO_4}^-$ $(ii) : {CH_3NH_3}^+$
Write the reactions were ${SO_4}^{2-}$ and $CH_3NH_2$ act like bases: $(i) : {SO_4}^{2-} + H_2O --> H{SO_4}^- + OH^-$ $(ii) : {CH_3NH_2} + H_2O --> {CH_3NH_3}^+ + OH^-$ The acids formed in these reactions are the conjugated acids.