Ca -> CaOCa + O2 -> CaO
CaO -> CaCl2CaO + 2HCl -> CaCl2 + H2O
CaCl2 -> CaCO3CaCl2 + Na2CO3 -> CaCO3 + 2NaCl
CaCO3 -> CaOCaCO3 -> CaO + CO2
Ca -> CaO
Ca + O2 -> CaO
CaO -> CaCl2
CaO + 2HCl -> CaCl2 + H2O
CaCl2 -> CaCO3
CaCl2 + Na2CO3 -> CaCO3 + 2NaCl
CaCO3 -> CaO
CaCO3 -> CaO + CO2