ABSTRACT
It may happen that the measured thermodynamic quantity is in linear relation with the number of moles of the component. Remark concerning the use of the term chemical potential: The chemical potential is a molar partial quantity. This term is generally used when a mixture is under consideration. When it is the case of a pure substance under consideration, it is the term molar Gibbs energy which is used. This relation is very important. It is sufficient to consider the case in which an extensive property of a solution is in linear relation with the number of moles of each of the components to be convinced by its interest. The chemical potential of a substance is a quantity which is liable to quantify its tendency to leave its current thermodynamic state by every sort of process, physical, chemical or biochemical one. The chemical potential represents the escaping tendency of a substance, as does the molar Gibbs energy.
