Ответ:
CaO + 2HCl = CaCl2 + H2O
CaCl2 + Na2CO3 = CaCO3↓ + 2NaCl
CaCO3 + H2SO4 = CaSO4 + CO2↑ + H2O
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Ответ:
CaO + 2HCl = CaCl2 + H2O
CaCl2 + Na2CO3 = CaCO3↓ + 2NaCl
CaCO3 + H2SO4 = CaSO4 + CO2↑ + H2O