- Detailed information about the chemical equation:
This equation describes the oxidation process of copper (Cu) by nitric acid (HNO3). The result of the reaction is the formation of copper (II) nitrate (Cu(NO3)2), water (H2O), and nitrogen dioxide (NO2).
- Reaction conditions:
This reaction occurs when copper and concentrated, hot nitric acid are combined. The nitric acid must be concentrated and hot, otherwise the reaction will not occur or will occur slowly.
- Reaction process:
In the course of the reaction, copper (Cu) is oxidized to the valence state +2, while nitrogen in nitric acid is reduced from the valence state +5 to +4.
- Phenomena occurring:
When the reaction takes place, you will see a significant color change. Initially, the red copper will gradually dissolve in the colorless nitric acid solution, forming a blue solution of copper (II) ions. Simultaneously, reddish-brown nitrogen dioxide gas will be released, changing the color of the solution and also creating an unpleasant smell.