Table of Contents
Journal of Thermodynamics
Volume 2014 (2014), Article ID 124012, 9 pages
Research Article

Acoustic and Volumetric Properties of Mixture of (N,N-Dimethylacetamide + Ethyl Acrylate) with 1-Butanol or iso-Butanol or t-Butanol at 308.15 K

1NM Govt. Degree College, Medak District, Jogipet, India
2PBN College, Guntur District, Nidubrolu, India
3SVLNS Govt. Degree College, Bheemunipatnam, India
4Department of Physics, Acharya Nagarjuna University, Nagarjuna Nagar 522 510, India

Received 18 August 2013; Revised 22 January 2014; Accepted 27 January 2014; Published 27 February 2014

Academic Editor: Shiripad T. Revankar

Copyright © 2014 M. Kondaiah et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Densities, , and ultrasonic speeds, of mixtures of 1-butanol or iso-butanol or t-butanol with equimolar mixture of (N,N-dimethylacetamide + Ethyl acrylate) over the entire composition range have been measured at  K. Using the experimental results, deviation in ultrasonic speed, , deviation in isentropic compressibility, , excess molar volume, , excess intermolecular free length, , and excess acoustic impedance, , have been calculated. The variation of these properties with composition of the mixtures has been discussed in terms of molecular interactions in these mixtures. The deviation/excess properties have been fitted to Redlich-Kister type polynomial and the corresponding standard deviations have been calculated. Negative values of , , and and positive values of , and are observed over the entire composition range. The observed negative and positive values of deviation/excess properties are attributed to the strong interactions between the unlike molecules of the mixtures. Further theoretical values of sound velocity in the mixtures have been evaluated using various theories and compared with experimental sound velocities to verify the applicability of such theories to the systems studied. Theoretical ultrasonic velocity data has been used to study molecular interactions in the systems investigated.