Abstract
Dynamic viscosities () of a binary liquid system: Tri-n-butyl phosphate (TBP) + benzene have been experimentally measured over the entire range (X1) of TBP at temperature 308.15K and pressure 0.1MPa. The dynamic viscosity of liquid mixtures hasbeen calculated using five mathematical relations of zero adjustable parameters such as Croenaurer-Rothfus- Kermore relation, Gambrill relation, Bingham relation, Kendall-Munroe relation and Arrhenius – Eyring relation. The validity of these relations has been verified separately by taking the average percentage deviations (APD) and root mean square deviation relative (RMSDs) between experimental and computed values and displayed graphically. Furthermore, the mixture viscosities have been correlated with those predicted one by using another six models of single and double adjustable / interaction parameters such as Grunberg-Nissan, Katti and Chaudhri, Hind, Tamura -Kurata, Heric and Eyring-Margules. A comparison between theoretical and experimental values of viscosity divulges that Gambrill’s relation predicts the data reasonably well in case of zero adjustable parameters whereas Eyring-Margules shows the best fit in case of single and double interaction parameters.
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