2Ca + O₂ ⟹ 2CaO
CaO + H₂O ⟹ Ca(OH)₂
Ca(OH)₂ + 2HNO₃ ⟹ Ca(NO₃)₂ + 2H₂O
Ca(NO₃)₂ + H₂SO₄ ⟹ CaSO₄ + 2HNO₃.
2Ca + O₂ ⟹ 2CaO
CaO + H₂O ⟹ Ca(OH)₂
Ca(OH)₂ + 2HNO₃ ⟹ Ca(NO₃)₂ + 2H₂O
Ca(NO₃)₂ + H₂SO₄ ⟹ CaSO₄ + 2HNO₃.