The above equation describes the reaction process between nitric acid (HNO3) and hydrogen sulfide (H2S) to produce sulfurous acid (H2SO3), nitric oxide (NO), and water (H2O). The reaction ratio shows that two molecules of HNO3 react with three molecules of H2S to produce three molecules of H2SO3, two molecules of NO, and two molecules of H2O.
- Reaction conditions
The above reaction usually occurs at high temperature and/or high pressure. In addition, the presence of a catalyst can help to speed up the reaction.
- Reaction process
The reaction begins when nitric acid (HNO3) and hydrogen sulfide (H2S) come into contact with each other. When this happens, the molecules of HNO3 and H2S react with each other, producing sulfurous acid (H2SO3), nitric oxide (NO), and water (H2O). This process continues to occur until there is no HNO3 or H2S left.
- Occurring phenomena
Color changes can be observed when the reaction occurs. Nitric acid has a pale yellow or colorless color, while hydrogen sulfide has an undefined color. When reacting, it can create a colored or colorless substance (depending on the specific conditions of the reaction).