The above equation describes the reaction process between nitric acid (HNO3) and zinc sulfide (ZnS). The result of the reaction is a product consisting of: nitrogen dioxide gas (NO2), water (H2O), zinc nitrate (Zn(NO3)2), and pure sulfur (S).
- Reaction conditions:
This reaction occurs easily at room temperature and standard pressure. However, the reaction rate can be increased by raising the temperature or pressure.
- Reaction process:
During the reaction process, nitric acid (HNO3) reacts with zinc sulfide (ZnS) to create nitrogen dioxide gas (NO2), water (H2O), zinc nitrate (Zn(NO3)2), and pure sulfur (S).
- Phenomena occurring:
In this process, there will be phenomena of boiling, red smoke from the generated NO2 gas, and the appearance of a layer of green gas bubbles. The pure sulfur (S) produced has a yellow color. Overall, this phenomenon demonstrates the transformation of substances from their initial state to the products of the chemical reaction.