ZnSO4 + (NH4)2S = ZnS + (NH4)2SO4
Zn(+2) + SO4(-2) + 2NH4(+) + S(-2) = ZnS + 2NH4(+) + SO4(-2)
Zn(+2) + S(-2) = ZnS
PbO +2 NaOH = Na2PbO2 + H2O
PbO + 2Na(+) + 2OH(-) = 2Na(+) + PbO2(-2) + H2O
PbO + 2OH(-) = PbO2(-2) + H2O
(CoOH)2CO3 + 2HCl = 2CoOHCl + CO2 + H2O
2CoOH(+) + CO3(-2) + 2H(+) + 2Cl(-) = 2CoOH(+) + 2Cl(-) + CO2 + H2O
CO3(-2) + 2H(+) = CO2 + H2O
ZnSO4 + (NH4)2S = ZnS + (NH4)2SO4
Zn(+2) + SO4(-2) + 2NH4(+) + S(-2) = ZnS + 2NH4(+) + SO4(-2)
Zn(+2) + S(-2) = ZnS
PbO +2 NaOH = Na2PbO2 + H2O
PbO + 2Na(+) + 2OH(-) = 2Na(+) + PbO2(-2) + H2O
PbO + 2OH(-) = PbO2(-2) + H2O
(CoOH)2CO3 + 2HCl = 2CoOHCl + CO2 + H2O
2CoOH(+) + CO3(-2) + 2H(+) + 2Cl(-) = 2CoOH(+) + 2Cl(-) + CO2 + H2O
CO3(-2) + 2H(+) = CO2 + H2O