Topological investigations of excess heat capacities of ternary mixtures containing chlorotoluenes and cyclic amides

Abstract

Excess heat capacities, (C^E_P)₁₂₃ 1-methylpyrrolidin-2-one (1) + pyrrolidin-2-one (2) + o- or m- or p-chlorotoluene (3) ternary and C^E_P  of 1-methylpyrrolidin-2-one (1) + pyrrolidin-2-one (2) binary mixtures have been determined at 293.15, 298.15, 303.15 K and 0.1 MPa using micro differential scanning calorimeter. The results were discussed in terms of Graph (which deals with the topology of the constituent molecules) and Flory’s theories. The results suggested that C^E_P and C^E_P  values determined by Graph theory compared well with experimental values. Thermodynamics is the cornerstone for many scientific and engineering disciplines including physics, chemistry, chemical engineering, petroleum engineering and material science. It provides the basis for the design and optimization of new sustainable processes and the development of advance materials and products.