CaO + H2O = Ca(OH)2
Ca +2 H2O = Ca(OH)2 +H2
CaO +2HCl = CaCl2 + H2O
Ca + S = CaS
Ca + 2HCl = CaCl2 + H2
Cu + S = CuS
CaO + H2O = Ca(OH)2
Ca +2 H2O = Ca(OH)2 +H2
CaO +2HCl = CaCl2 + H2O
Ca + S = CaS
Ca + 2HCl = CaCl2 + H2
Cu + S = CuS