The chemical formula of basic copper carbonate is Cu2 tetraethylammonium tetrafluoroborate (OH)2CO3, also written as CuCO3·Cu(OH)2. The color is emerald green. In nature, copper usually exists in the form of this compound. It is a combination of copper and air. Dimethyl sulfoxide is a substance produced by the reaction of oxygen, carbon dioxide, water and other substances. Insoluble in water.
Basic copper carbonate is often called patina or patina.
Preparation and reaction preparation of basic copper carbonate
Using sodium carbonate Preparation by reacting with copper sulfate
Reaction equation: 2Na2CO3+ 2CuSO4+ H2O → Cu2(OH)2CO3↓ + CO2↑ + 2Na2SO4
Specific method:
According to volume ratio V(CuSO4): V(Na2CO3)=1:1.2 Take 0.5mol/L sodium carbonate solution and 0.5mol/L copper sulfate solution, and place them in a water bath at 70°C until the temperature is constant. Then mix the two and stir in a water bath environment of 70°C. A light blue precipitate can be observed. Adjust the pH value to 8.50~8.88, and stir the suspension continuously until the precipitate turns green. Stop stirring at this time and let it stand. After the precipitate settles, filter it and wash the precipitate with deionized water until there is no sulfate ion (sodium sulfate). The precipitate is then dried in an oven at 100°C to obtain green basic copper carbonate.
Preparation and reaction of basic copper carbonate is prepared by the action of sodium bicarbonate and copper sulfate
Reaction equation: 2CuSO4+ 4NaHCO3→ Cu2(OH)2CO3↓ + 3CO2↑ + H2O + 2Na2SO4
Preparation and reaction decomposition of basic copper carbonate
Basic copper carbonate will decompose into copper oxide, water and carbon dioxide. Reaction formula:
Preparation and reaction rust removal of basic copper carbonate
Put basic copper carbonate into dilute sulfuric acid to generate Copper sulfate, water and carbon dioxide. Reaction formula:
Cu2(OH)2CO3+ 2H2SO4→ 2CuSO4+ CO2↑ + 3H2O
Preparation and reaction of basic copper carbonateOther reactions
React with hydrochloric acid
Cu2(OH)2CO3+4HCl→2CuCl2+CO2↑+3H2O.
