Diffusion of gases

Diffusion of gases is the process by which molecules spread out from an area of higher concentration to an area of lower concentration, driven by their random thermal motion. This natural movement results in gases becoming more evenly distributed over time without any external force. For example, when a perfume is sprayed, the scent molecules diffuse through the air, eventually reaching your nose. Diffusion occurs because gas molecules are constantly moving and colliding, which gradually mixes different areas until equilibrium is reached. This process happens rapidly due to the high speed and constant motion of gas particles.