NaHCO3\mathrm{NaHCO}_{3}NaHCO3
NaOH(aq)\mathrm{NaOH(aq)}NaOH(aq)
Na2CO3\mathrm{Na}_{2} \mathrm{CO}_{3}Na2CO3
A, B, C\text {A, B, C}A, B, C