Volumetric Properties of (Difurylmethane + an Amide) Binary Mixtures at 293.15K, 298.15K and 303.15 K

Belcher Fulele

doi:10.11648/j.ajpc.20170602.11

Abstract

Densities (ρ) of pure difuryl methane (DFM), N-methylformamide (NMF), N-ethylformamide (NEF), N,N-dimethylformamide (DMF) and N,N-dimethylacetamide (DMA) and those of [DFM + (NMF or NEF or DMF or DMA] binary mixtures over the entire composition range, have been measured at (<i>T</i> = 293.15, 298.15 and 303.15) K and atmospheric pressure. Excess molar volumes (<img width="18" height="16" src="http://article.sciencepublishinggroup.com/journal/128/1281027/image001.png" />), of each binary system were calculated and correlated by the Redlich-Kister equation. <img width="18" height="16" src="http://article.sciencepublishinggroup.com/journal/128/1281027/image001.png" /> values for each binary system were negative at each of the three temperatures investigated (<i>T</i> = 293.15, 298.15 and 303.15) K. The <img width="18" height="16" src="http://article.sciencepublishinggroup.com/journal/128/1281027/image001.png" /> values decreased with temperature increase for each of the binary systems investigated. Sign and magnitude of <img width="18" height="16" src="http://article.sciencepublishinggroup.com/journal/128/1281027/image001.png" /> are discussed in-terms of type and nature of intermolecular interactions that occur in a binary mixture. The <img width="18" height="16" src="http://article.sciencepublishinggroup.com/journal/128/1281027/image001.png" /> data have been used to derive excess partial molar volumes (<img width="18" height="16" src="http://article.sciencepublishinggroup.com/journal/128/1281027/image002.png" />), limiting excess partial molar volumes (<img width="32" height="16" src="http://article.sciencepublishinggroup.com/journal/128/1281027/image003.png" />) and limiting partial molar volumes at infinite dilute region (<img width="20" height="16" src="http://article.sciencepublishinggroup.com/journal/128/1281027/image004.png" />) of each component of the binary mixture. Results are discussed in terms of possible intermolecular interactions and structural effects that occur in the binary mixtures.

Highlights

In previous papers we have reported studies on volumetric [1, 2, 3] and acoustic properties [4] of binary mixtures containing difuryl methane (DFM) and (C1-C6) n-alkanols at various temperatures
These investigations provided a deep insight with respect to understanding of the DFM / (C1-C6) nalkanols intermolecular interactions and revealed significant deviation from ideal behavior which was attributed to chemical and structural interaction effects
The present investigations are focused on the study of intermolecular interactions in binary systems containing DFM with Nmethylformamide (NMF), N-ethylformamide (NEF), N,Ndimethylformamide (DMF) and N,N -dimethylacetamide (DMA) over the entire composition range at (T =293.15, 298.15 and 303.15) K and atmospheric pressure

Summary

Introduction

In previous papers we have reported studies on volumetric [1, 2, 3] and acoustic properties [4] of binary mixtures containing difuryl methane (DFM) and (C1-C6) n-alkanols at various temperatures These investigations provided a deep insight with respect to understanding of the DFM / (C1-C6) nalkanols intermolecular interactions and revealed significant deviation from ideal behavior which was attributed to chemical and structural interaction effects. The present investigations are focused on the study of intermolecular interactions in binary systems containing DFM with Nmethylformamide (NMF), N-ethylformamide (NEF), N,Ndimethylformamide (DMF) and N,N -dimethylacetamide (DMA) over the entire composition range at (T =293.15, 298.15 and 303.15) K and atmospheric pressure. In the present study we report densities ρ, of (DFM + NMF or NEF or DMF or DMA) binary mixtures at (T = 293.15, 298.15 and 303.15)K and atmospheric pressure over the entire composition range.

Materials

Apparatus and Procedure

Excess Molar Volumes

Conclusions