Dvs. Jain et Ns. Dhar, THERMODYNAMICS OF BINARY-MIXTURES OF ALKYLBENZENES - ROLE OF ORIENTATIONAL ORDER IN BENZENE PLUS ALKYLBENZENE MIXTURES, Pure and applied chemistry, 66(3), 1994, pp. 399-404
The results of measurements for excess molar enthalpies, excess molar
heat capacities and excess molar volumes of a number of mixtures consi
sting of alkylbenzenes reported from our laboratories and the literatu
re data on similar systems have been examined here. It has been noted
that the behavoiur of mixtures containing benzene + alkylbenzene is qu
ite different from those mixtures in which both the components are alk
ylbenzenes. These observations have been explained in terms of importa
nce of orientational order present in pure benzene. In general the exc
ess functions depend on the difference (n2 - n1) in the chain lengths
of alkyl groups of the two components.