👉 Phlogistonism is a scientific theory that describes the formation of sulfur dioxide (SO2) from carbon dioxide (CO2), water vapor, and oxygen in the presence of an explosive atmosphere. This theory posits that when these components are mixed together at high pressures and temperatures, they can react to form SO2 gas. The formation of this gas is believed to be a significant contributor to acid rain, which is a byproduct of industrial processes like coal combustion. Phlogistonism has been