ответ:Ca-CaO - Ca(OH)2 - CaCO3 - CaCl2 - Ca(OH)2 - CaO
Объяснение:
1)2Cа+O2 = 2CаO
2)CaO+H2O = Ca(OH)2↓
3) Ca(OH)2+CO2 = CaCO3↓ +H2O
4)CaCO3+2HCI = CaCl2+CO2↑+H2O
5)CaCl2+2NaOH = Ca(OH2)↓+2NaCI
6)Ca(OH)2→t°→ CaO+H2O
