Make up the uranium reaction: Calcium carbonate = calcium oxide = calcium nitrate = calcium carbonate

| May 25, 2021 | education

Make up the uranium reaction: Calcium carbonate = calcium oxide = calcium nitrate = calcium carbonate = calcium bicarbonate = calcium carbonate = calcium chloride

1) CaCO3 = (t) CaO + CO2
Thermal decomposition of carbonate to form acidic carbon dioxide and basic calcium oxide.
2) CaO + 2HNO3 = Ca (NO3) 2 + H2O
Nitrate formation
3) Ca (NO3) 2 + K2CO3 = CaCO3 + 2KNO3
Exchange reaction. Carbonic acid cannot be added, since it will not displace the stronger nitric acid from the salt.
4) CaCO3 + H2O + CO2 = Ca (HCO3) 2
Formation of an acidic salt with an excess of acid.
5) Ca (HCO3) 2 = (t) CaCO3 + H2O + CO2
Thermal decomposition. Another reaction of returning to medium salt is also possible:
Ca (HCO3) 2 + Ca (OH) 2 = 2CaCO3 + 2H2O
6) CaCO3 + 2HCl = CaCl2 + H2O + CO2
To obtain chloride, an acid is used, since the exchange reaction would be impossible due to the insolubility of CaCO3.



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.