Write the reaction equations: Ca → CaO → CaCl2.

1. Obtaining calcium oxide (quicklime) by burning metallic calcium at 200-300 ° C.

2Ca + O2 = 2CaO.

2. As a strong base, calcium oxide interacts with acids, including hydrochloric acid, to form calcium salts.

CaO + 2HCl = CaCl2 + H2O.



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