Viscosities of binary liquid mixtures of cyclohexanone with alkanes,benzene, toluene and tetrachloromethane at 298.15 K

Viscosities for the binary liquid mixtures of cyclohexanone with n-hexane, n-heptane, 2, 2, 4-trimethylpentane, benzene, toluene and tetrachloromethane have been determined at 298.15 K. The deviation in viscosity from the ideal law is negative in all the systems except in the system, cyclohexanone with tetrachloromethane. In this system excess viscosity exhibits a positive deviation over the entire range of mole fraction. The results have been interpreted in terms of molecular interactions, and of difference in size and shape of components. The theoretical excess viscosities have been calculated from absolute reaction rate theory and free volume theory of flow by making use of the Bloomfield and Dewan relations. Theoretical excess viscosities are in qualitative agreement with experimental results for four out of the six systems examined.