Given

a mixture of fluid components with total mass of each component (assumed to stay constant during dynamic processes)

and

fluid phases () sharing the same volume under pressure and temperature

then in thermodynamic equilibrium the total mass of C-component will decompose into a sum of fluid components:

m_C = \sum_\alpha m_{C \alpha}  (p,T)

where

mass of C-component in -phase as a function of pressure and temperature

This may alternatively rearranaged as:

m_C = \sum_\alpha R_{C \alpha}  (p,T) m_\alpha(p, T)

where

	cross-phase exchange coefficient of C-component in -phase as a function of pressure and temperature
	total mass of -phase as a function of pressure and temperature

See Also