2Al+3Br2=2AlBr3
N2+3H2=2NH3
2Al(OH)3=Al2O3+3H2O
CuO+2HNO3=Cu(NO3)2+H2O
Al2O3+6HCl=2AlCl3+3H2O
2CuOH=Cu2O+H2O
K2O+H2O=2KOH
2Al+3Br2=2AlBr3
N2+3H2=2NH3
2Al(OH)3=Al2O3+3H2O
CuO+2HNO3=Cu(NO3)2+H2O
Al2O3+6HCl=2AlCl3+3H2O
2CuOH=Cu2O+H2O
K2O+H2O=2KOH