H2so4+al cuo+h2so4 naoh+h2so4 naoh+fecl3 hcl+zn cuo+hcl naoh+hcl naoh+cuso4

3H2SO4+2Al=Al2(SO4)3+3H2...
если H2SO4-концентрированная, то при t 6H2SO4+2Al=Al2(SO4)3+3SO2+6H2O
CuO+H2SO4=CuSO4+H2O
2NaOH+H2SO4=Na2SO4+H2O
3NaOH+FeCl3=3NaCl+Fe(OH)3
2HCl+Zn=ZnCl2+H2
CuO+2HCl=CuCl2+H2O
NaOH+HCl=NaCl+H2O
2NaOH+CuSO4=Na2SO4+Cu(OH)2