Study of Dielectric Relaxation Time and Thermodynamic Parameters in Some Polar Molecules in dilute solution of Benzene

2017 Journal of Ultra Scientist of Physical Sciences Section B  
Present communication reports the experimental values of the dielectric relaxation time () of 4 Methoxyaniline, 4 Ethoxyaniline, 2 Nitroaniline, 2 Chloro, 4 Nitroaniline, 2,6 Dichloroaniline and 2 Methoxy, 3 Nitroanilinein dilute solution of benzene at wavelength 3.13 cm in the microwave region. The measurements have been made at 293, 303 and 313 0 K, in order to calculate the free energy of activation for dipole orientation process (F). The experimental values of have been correlated with
more » ... een correlated with the calculated value of obtained using different theories of dielectric relaxation time (  ). It is concluded from this comparative study that the Murty equation is a better representation of the dielectric relaxation phenomenon. Thermo dynamical parameters like molar free energy of activation (F), molar enthalpy of activation (H) and molar entropy of activation (S) have been evaluated by considering the relaxation as the rate process. From the values of F  for the various compounds investigated conclusion has been made that energy of activation increases with the size of molecule.
doi:10.22147/jusps-b/290202 fatcat:iavqfmeloncgbfapr2sllfjo5u