#underbrace(NaOH(aq) + HCl(aq) rarr NaCl(aq) + H_2O(l))_"pH at equivalence = 7"#
#"Weak acid, strong base..."#
#underbrace("NaOH(aq) + H"_3"CO"_2"H(aq)" rightleftharpoons "NaO"_2"CCH"_3(aq) + H_2O(l))_"pH at equivalence > 7"#
#"strong acid, weak base..."#
#underbrace("HCl(aq) + HCO"_3^(-) rarr "CO"_2(g)uarr + H_2O(l)+"Cl"^-)_"pH at equivalence < 7"#