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

$(i) = OH^-$ $(ii) = H_3PO_4$
Write the reactions where the bases reacts with water. $(i) O^{2-} + H_2O --> 2OH^-$ $(ii) {H_2PO_4}^- + H_2O --> H_3PO_4 + OH^-$ *Analyzing those reactions, we will find that $OH^-$ and $H_3PO4$ are the conjugated acids.