Physical and chemical properties of copper nitrate: copper nitrate is a nitrate of copper, and the chemical formula is Cu(NO? )? , white powder. Easily deliquescent, easily soluble in water, the solubility is 45g at 0℃, and it can be re-precipitated by adding concentrated nitric acid. Red heat is decomposed into nitrogen oxides and copper oxides, which are decomposed by hydrochloric acid;

So it can be seen that the chemical formula of copper nitrate is not CuNo? , it should be Cu(NO? )? .

Extended data:

Bright blue anhydrous copper nitrate Cu(NO? )? It is a volatile solid that sublimates in a vacuum. In gaseous state, Cu(NO? )? Monomer is a planar square structure, each Cu atom is connected with four oxygen atoms, and polymerization occurs when it condenses;

Synthesis method: 30%-32% nitric acid is added into an acid-resistant reactor with stirring, and copper scraps are slowly added to react under stirring. After the reaction is carried out for 8 hours, the solution is heated to 60-70 DEG C, nitrogen oxide gas is expelled, and the reaction is carried out until no yellow smoke is generated;

Put the solution into a storage tank, dilute it with water, then filter it, acidify the clear filtrate with nitric acid, evaporate it under reduced pressure, concentrate it at 60-70℃ until the relative density of the solution is 1.78- 1.8, then cool and crystallize, centrifuge and dry to obtain the finished product of copper nitrate.

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