Certain questions of thermodynamic theory of weak solutions

Questions such as the standard states and the difference and similarity of the thermodynamic properties of a component in the limiting concentration regions, the additive constants in thermodynamic expressions and their interpretation, and the activity and coefficient of activity for different standard states are examined on the basis of the thermodynamic theory of weak solutions as constructed by Gibb's method. The states of the pure component according to Raoult's law and Henry's law are introduced on the basis of the determining laws of weak solutions.