In the experiment of copper reacting with nitric acid, the following phenomenon can be observed is: A. Produce hydrogen gas B. Produce carbon dioxide C. The solution turns blue D. The copper dissolves and no gas is produced 相关知识点: ...
(annealed); electrical resistivity 1.71 microhm-cm at 25°C; Poisson's ratio 0.33; melts at 1,083°C; vaporizes at 2,567°C; insoluble in water; dissolves in nitric acid and hot sulfuric acid; slightly soluble in hydrochloric acid; also soluble in ammonium hydroxide, ammonium carbonate and...
(annealed); electrical resistivity 1.71 microhm-cm at 25°C; Poisson's ratio 0.33; melts at 1,083°C; vaporizes at 2,567°C; insoluble in water; dissolves in nitric acid and hot sulfuric acid; slightly soluble in hydrochloric acid; also soluble in ammonium hydroxide, ammonium carbonate and...
Copper dissolves in nitric acid with the formation of Cu(NO3)2 and nitrogen oxides, in hot concentrated H2SO4 with the formation of CuSO4 and SO2, and in hot dilute H2SO4 upon passing air through the solution. All copper salts are toxic. Univalent copper and bivalent copper form numerous...
production methodelectrolysis method takes metal copper as raw material and dissolves in concentrated sulfuric acid. The composition of the electrolyte is: Cu52.3 g/L, H2SO4 about 200g/L, electrolyte temperature 58.5 degrees C, cell voltage 0.33V, cathode current density 1.82 A/cm2. After elect...
production method electrolysis method takes metal copper as raw material and dissolves in concentrated sulfuric acid. The composition of the electrolyte is: Cu52.3 g/L, H2SO4 about 200g/L, electrolyte temperature 58.5 degrees C, cell voltage 0.33V, cathode current density 1.82 A/cm2. After ele...
Blue-green orthorhombic crystals; deliquescent; sublimes; readily dissolves in water, alcohols and dioxane.The trihydrate and hexahydrate are blue rhombohedral crystals; hygroscopic; density 2.32 g/cm3 (trihydrate), 2.07 g/cm3 (hexahydrate); melts at 114°C (trihydrate); trihydrate decomposes at 170...
Copper dissolves with an apparent valence number equal to unity and it is thought that copper(I) is stabilised in such solutions by complex formation. Copper extrusion sheaths can be removed from zirconium by anodic dissolution in such media without loss of zirconium or absorption of hydrogen by ...
production method electrolysis method takes metal copper as raw material and dissolves in concentrated sulfuric acid. The composition of the electrolyte is: Cu52.3 g/L, H2SO4 about 200g/L, electrolyte temperature 58.5 degrees C, cell voltage 0.33V, cathode current density 1.82 A/cm2. After ele...
production methodelectrolysis method takes metal copper as raw material and dissolves in concentrated sulfuric acid. The composition of the electrolyte is: Cu52.3 g/L, H2SO4 about 200g/L, electrolyte temperature 58.5 degrees C, cell voltage 0.33V, cathode current density 1.82 A/cm2. After elect...