- Definition of Cr(NO3)2
Cr(NO3)2, also known as Chromium (II) Nitrate, is a chemical compound composed of chromium ions (Cr2+) and nitrate ions (NO3-). In the molecule Cr(NO3)2, the chromium ion combines with two nitrate ions to form the compound. In English, this compound is referred to as Chromium(II) nitrate.
The atomic mass of chromium is 52, that of nitrogen is 14, and that of oxygen is 16. Therefore, the molecular mass of Cr(NO3)2 is 180.0016 g/mol. The molecular structure consists of one chromium atom combined with 6 oxygen atoms and 2 nitrogen atoms.
- Properties of Cr(NO3)2
Cr(NO3)2 is solid at room temperature, and its color ranges from green to black. This compound does not have a particular smell and has a pH of approximately 6 when dissolved in water. Its chemical properties mainly include oxidation reactions and reactions with acids.
- Common chemical reactions of Cr(NO3)2
Cr(NO3)2 can react with metals such as Fe, Ni to form the metal’s nitrate salt and metallic chromium. It can also react with strong acids such as HCl, H2SO4 to form chromium chloride or sulfate. Cr(NO3)2 can also react with nonmetals such as S, O to form chromium compounds.
- Synthesis of Cr(NO3)2
4.1 Laboratory synthesis of Cr(NO3)2
Cr(NO3)2 can be synthesized by reacting metallic chromium with dilute nitric acid.
4.2 Industrial synthesis of Cr(NO3)2
In industry, Cr(NO3)2 is produced by reacting chromium with concentrated nitric acid. This compound is primarily used in the plating industry and as a catalyst.