నైరూప్య

Theoretical evaluation of ultrasonic velocity in binary mixtures of alkanols with di ethylmalonate

Ch.Udayalakshmi, K.A.K.Raj Kumar, P.B.Sandhyasri, C.Rambabu

NomotoÂÂ’s relation, ideal mixing relation (IMR) impedance dependence relation (IDR), RaoÂÂ’s velocity method (RVM) and JunjieÂÂ’s method (JM) were used for evaluating the theoretical values of ultrasonic velocity in binary liquid mixtures of diethyl malonate (DEM) + 1- butanol, di ethyl malonate (DEM) + pentanol and di ethyl malonate (DEM) + hexanol at 303.15,308.15,313.15 and 318.15K. The relative merits of these theoretical relations were examined by comparing the theoretical values of ultrasonic velocity with the values obtained experimentally. The validity of the theories was checked by applying the chi-square test for goodness of fit and by calculating the average percentage error (APE).