C.1 mol/L的NaAlO2溶液和2.5 mol/L的HCl等体积互相均匀混合: AlO2―+4H+ =Al3++2H2OD.Ca(HCO3)2与过量Ca(OH)2溶液反应: Ca2++HCO3-+OH-=CaCO3↓+H2O