1. 2Na + 2H2O = 2NaOH + H2
2NaOH + H2S = Na2S + 2H2O
Na2S + H2O = 2NaOH + H2S (обратная реакция)
2. 2Ca + O2 = 2CaO
CaO + H2O = Ca(OH)2
Ca(OH)2 + CO2 = CaCO3 + H2O
CaCO3 = (temperature) =CaO + CO2
CaO + 2HCl = CaCl2 + H2O
3. 2Li + 2H2O = 2LiOH + H2
2LiOH = (temperature) = Li2O + H2O
Li2O + 2HCl = 2LiCl+H2O
3LiCl + H3PO4 = Li3PO4 + 3HCl