选A.
1.NaHCO3+HCl=NaCl+H2O+CO2↑
NaHCO3+NaOH=Na2CO3+H2O
2.Al2O3+6HCl=2AlCl3+3H2O
Al2O3+2NaOH=22NaAlO2+H2O
3.Al(OH)3+3HCl=AlCl3+3H2O
Al(OH)3+NaOH=NaAlO2+2H2O
4.2Al+6HCl=2AlCl3+3H2↑
2Al+2NaOH+2H2O=2NaAlO2+3H2↑
5.Na2CO3+2HCl=2NaCl+H2O+CO2↑
Na2CO3+NaOH不反应.