Sulfur dioxide and oxygen gas react to produce sulfur trioxide in an exothermic reaction
2SO2 + O2 → 2SO3
At the same time, the endothermic reverse reaction occurs, breaking the sulfur trioxide apart
2SO3 → 2SO2 + O2
Therefore, a chemical equilibrium is reached between the three gases:
2SO2 + O2 ? 2SO3
This reaction is allowed to take place within a sealed container. If we want to produce moresulfur trioxide, we could
- [ Select ] ["increase", "decrease"] the temperature in the container
- [ Select ] ["increase", "decrease"] the pressure in the container
- [ Select ] ["decrease", "increase"] the concentration of oxygen gas in the container
- remove [ Select ] ["sulfur dioxide", "sulfur trioxide"] from the container