What is Gibb's Phase rule ?

The celebrated section rule given by J. Willard chemist provides a general and helpful relationship between the quantity of phases P, range of part C and therefore the range of degree of freedom F, that should be per order to characterize a heterogeneous system. in step with chemist section rule, a heterogeneous system isn't plagued by gravity or by electrical and magnetic forces.

The Gibbs phase rule is stated as:

If a heterogeneous system in equilibrium between any range of phases is influenced by temperature pressure and concentration solely and not by gravity or electrical or magnetic forces or by surface action then the add of range of phases P and degree of freedom F is bigger than range of elements C by 2.