# Chapter 16 - Acid-Base Equilibria - Exercises - Page 717: 16.16b

$(i) : {HSO_4}^-$ $(ii) : {CH_3NH_3}^+$

#### Work Step by Step

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.

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