\(\begin{array}{l}
1)\\
+H_2O:\,P_2O_5,CaO,Na_2O,CO_2,SO_2,SO_3,K_2O,BaO\\
+HCl:\,CaO,Na_2O,Al_2O_3,K_2O,BaO,MgO,ZnO,Fe_2O_3,HgO\\
+NaOH:\,P_2O_5,CO_2,Al_2O_3,SO_2,SO_3,ZnO\\
2)\\
+HCl:\,Ba(OH)_2,,CaCO_3,Fe,Al_2O_3,Zn(OH)_2,MgO,AgNO_3\\
+H_2SO_4\,loang:\,Ba(OH)_2,Ba(NO_3)_2,CaCO_3,Fe,Al_2O_3,Zn(OH)_2,MgO,AgNO_3\\
+H_2SO_4\,dac,\,nong:\,Cu,Ba(OH)_2,Ba(NO_3)_2,CaCO_3,Ag,Fe,Al_2O_3,Zn(OH)_2,MgO,AgNO_3\\
3)\\
+HCl:\,NaOH,Ba(OH)_2,Cu(OH)_2,Fe(OH)_3,KOH,Ca(OH)_2,LiOH,Al(OH)_3,Mg(OH)_2,Pb(OH)_2,Zn(OH)_2\\
+FeCl_3:\,NaOH,Ba(OH)_2,Cu(OH)_2 ,KOH,Ca(OH)_2,LiOH,Al(OH)_3,Mg(OH)_2,Pb(OH)_2,Zn(OH)_2\\
+CO_2:\,NaOH,Ba(OH)_2,KOH,Ca(OH)_2,LiOH\\
Bi\,nhiet\,phan:\,Cu(OH)_2,Al(OH)_3,Mg(OH)_2,Pb(OH)_2,Fe(OH)_3,Zn(OH)_2
\end{array}\)