What is the specific gravity of sulfur dioxide?

The specific gravity of a substance is a comparison of its density to that of water. For gases, this means it's typically compared to the density of air, given that air has a specific gravity of about 1 at standard conditions. The specific gravity of sulfur dioxide (SO2) is approximately 2.26, meaning it is over twice as dense as the air around us. This characteristic is crucial in various applications, including industrial processes and environmental assessments, as it influences how the gas disperses in the atmosphere and its behavior in confined spaces.

In contrast, the other values presented do not accurately represent the specific gravity of sulfur dioxide. Gases with specific gravities significantly lower than 2.26 would behave quite differently in terms of buoyancy in air, affecting ventilation and gas monitoring in mines or industrial settings.