It is necessary to obtain CO2 from CaCO3, but not by decomposition.
| May 2, 2021 | education
Get carbon dioxide CO2 from CaCO3 by the action of mineral acids (sulfuric, hydrochloric, nitric or others). The acids will displace carbon dioxide from the chalk to form salt and water. This method is used in laboratories to produce CO2.
CaCO3 + 2HCl = CaCl2 + CO2 + H2O;
CaCO3 + H2SO4 = CaSO4 + CO2 + H2O.
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