In his 1876 magnum opus On the Equilibrium of Heterogeneous Substances, a graphical analysis of multi-phase chemical systems, he engaged his thoughts on chemical free energy in full.
Pada tahun 1876 magnum opus On The Equilibrium of Heterogeneous Substances, sebuah analisis grafis dari sistem kimia multi-fasa, dia melibatkan pemikirannya tentang energi bebas kimia secara penuh.