CH3COOH\mathrm{CH}_{3} \mathrm{COOH}CH3COOH
H2O\mathrm{H}_{2} \mathrm{O}H2O
CH3COO−\mathrm{CH}_{3} \mathrm{COO}^{-}CH3COO−
H3O+\mathrm{H}_{3} \mathrm{O}^{+}H3O+