The above equation describes the reaction process between nitric acid (HNO3) and pyrite (FeS). The result of this reaction is the formation of nitrogen dioxide (NO2), water (H2O), iron(III) nitrate (Fe(NO3)3) and sulfur (S).
- Reaction Conditions
The reaction requires appropriate temperature and pressure to occur. Simultaneously, the presence of excess nitric acid is needed to ensure the reaction is completely processed.
- Reaction Process
The reaction process takes place when nitric acid reacts with pyrite. The result of the reaction is the formation of nitrogen dioxide, water, iron(III) nitrate and sulfur.
- Occurring Phenomenon
When the reaction occurs, we can observe the color change of the solution, from the transparent color of nitric acid to the reddish-brown color of nitrogen dioxide. At the same time, gas will also be released.