Write the reaction equations: CaCO3 – CaCl2 – Ca- CaO – Ca (OH) 2 – CaCO3 – Ca (HCO3) 2- CaCO3
August 28, 2021
1) CaCO3 + 2HCl = CaCl2 + H2O + CO2 – interaction of calcium carbonate with hydrochloric acid;
CaCl2 = (electrolysis) = Ca + Cl2 – decomposition of calcium chloride;
2Ca + O2 = 2CaO – calcium oxidation;
CaO + H2O = Ca (OH) 2 – limestone slaking;
Ca (OH) 2 + CO2 = CaCO3 + H2O – interaction of calcium hydroxide with carbon dioxide;
CaCO3 + CO2 + H2O = Ca (HCO3) 2 – further interaction of calcium carbonate with carbon dioxide;
Ca (HCO3) 2 = (t) = CaCO3 + H2O + CO2 – thermal decomposition of calcium bicarbonate;
2) 2HCl + CaCO3 = CaCl2 + H2O + CO2
2H (+) + 2Cl (-) + Ca (+2) + CO3 (-2) —> Ca (+2) + 2Cl (-) + H2O + CO2 (gas) complete ionic equation;
2H (+) + CO3 (-2) —> H2O + CO2 (gas) abbreviated ionic equation.
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