1) 2Ca + O₂ = 2CaO
2) Ca + 2HCl = CaCl₂ + H₂
3) CaO + H₂SO₃ = CaSO₃ +H₂O
4) CaO + H₂O = Ca(OH)₂
5) Ca(OH)₂ + 2HCl = CaCl₂ + 2H₂O
6) CaCl₂ + H₂SO₄ = CaSO₄ +2HCl
1) 2Ca + O₂ = 2CaO
2) Ca + 2HCl = CaCl₂ + H₂
3) CaO + H₂SO₃ = CaSO₃ +H₂O
4) CaO + H₂O = Ca(OH)₂
5) Ca(OH)₂ + 2HCl = CaCl₂ + 2H₂O
6) CaCl₂ + H₂SO₄ = CaSO₄ +2HCl