Beta Phase: Square45 is currently in beta testing. Expect some features or content to be incomplete or missing.
45

Chemical Potential

The change in Gibbs free energy of a system per change in the amount of a component, a key concept in thermodynamics.
📜

The statement of the theorem

Define the chemical potential μi\mu_i of component ii in a system as the partial molar Gibbs free energy: \nμi=(∂G−∂ni)T,P,nj≠i\mu_i = \left(\frac{\partial G}{-\partial n_i}\right)_{T, P, n_{j\neq i}} \nAlternatively, it can be expressed in terms of activity aia_i and standard state μi0\mu_i^0: \nμi=μi0+RTln⁡(ai)\mu_i = \mu_i^0 + R T \ln(a_i)