Third Law Of Thermodynamics Chemistry. The third law of thermodynamics establishes the zero for entropy as that of a perfect, pure crystalline solid at 0 k. The third law of thermodynamics also refers to a state known as “absolute zero”.
The third law was developed by the chemist walther nernst during. Lim st→0 = 0 (1) where. If δs univ 0, the process is nonspontaneous, and if δs univ = 0, the system is at equilibrium.