The exercises in groups A and B cover the same concepts. Solutions to group A exercises are located in appendix E.
Draw a circle around the proton donor and a box around the proton acceptor for each of the reactants, and label which acts as an acid and which acts as a base.
(a) H3PO4(aq) + H2O(l) → H3O+(aq) + H2PO4−(aq)
(b) N2H4(l) + H2O(l) → N2H5+(aq) + OH−(aq)
(c) HNO3(aq) + HC2H3O2(aq) → H2C2H3O2+(aq) + NO3−(aq)
(d) 2NH4+(aq) + Mg(s) → Mg2+(aq) + 2 NH3+(aq) + H2(g)
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