Ca(NO3)2
1. Ca(OH)2+2HNO3--->Ca(NO3)2+2H2O
2. Ca+2HNO3---> Ca(NO3)2+ H2
3. CaO+ 2HNO3---> Ca(NO3)2+H2O
CuSO4
1. Cu(OH)2 + H2SO4---> CuSO4 + 2H2O
2. reakcja nie zachodzi
3. CuO+ H2SO4---> CuSO4 + H2O
PbS
1. Pb(OH)2+H2S--->PbS+2H2O
2. Pb+H2S--->PbS+H2
3. PbO+H2S--->PbS+H2O
AlPO4
1. Al(OH)3+H3PO4--->AlPO4+3H2O
2. 2Al+2H3PO4--->2AlPO4+3H2
3. Al2O3+2H3PO4--->2AlPO4+3H2O
K2SO3
1. 2KOH+H2SO3--->K2SO3+2H2O
2. 2K+H2SO3--->K2SO3+H2
3. K2O+H2SO3--->K2SO3+H2O