Definition Of Diffusion Rate

2 the spontaneous mixing of the molecules or ions of two or more substances resulting from random thermal motion.

Definition of diffusion rate. Diffusion is a physical process that refers to the net movement of molecules from a region of high concentration to one of lower concentration. Diffusion is the net movement of anything for example atom ions molecules from a region of higher concentration to a region of lower concentration. 1 the state or process of being widely spread. Diffusion is the movement of a fluid from an area of higher concentration to an area of lower concentration.

The particles will mix until they are evenly distributed. The material that diffuses could be a solid liquid or gas. Its rate is proportional to the concentrations of the substances and it increases with the temperature. Diffusion rates increase with temperature and decrease with increasing pressure molecular weight and molecular size.

Similarly the medium in which diffusion occurs could also be in one of the three physical states. Diffusion is a result of the kinetic properties of particles of matter. Diffusion is driven by a gradient in concentration. Diffusion rates are fastest when a large concentration difference exists on either side of the unit area.