Write the reaction equation: CaCl2-Ca-Ca (OH) 2-Ca (NO3) 2-CaSO4

CaCl2 → Ca → Ca (OH) 2 → Ca (NO3) 2 → CaSO4
1) CaCl2 → Ca + Cl2 (calcium chloride, calcium, chlorine);
2) Ca + 2H2O → Ca (OH) 2 ↓ + H2 ↑ (calcium, water, calcium hydroxide, hydrogen);
3) Ca (OH) 2 ↓ + 2HNO3 → Ca (NO3) 2 + 2H2O (calcium hydroxide, nitric acid, calcium nitrate, water);
4) Ca (NO3) 2 + H2SO4 → CaSO4 ↓ + 2HNO3 (calcium nitrate, sulfate acid, calcium sulfate, nitric acid).



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