 Maxwell–Fricke equation

The Maxwell–Fricke equation describes the relationship between the diffusion coefficients of a solute in various states, specifically in terms of the concentration gradient and other physical parameters. It is often presented in the context of diffusion processes and can be used to model how particles move and spread in a medium, particularly in fluid dynamics and electrochemistry. The equation is derived from principles of statistical mechanics and considers factors such as temperature, viscosity, and concentration gradients to relate the mobility of particles to the diffusion process.