ABSTRACT
In this chapter, densities, ρ, speeds of sound, u, and refractive indices, n D of the binary mixtures of N,N-diethylaniline (DEA) with anisole (ANS) and tert-butyl methyl ether (MTBE) were determined at 0.1 MPa pressure 192 as a function of composition and temperature from 293.15 to 323.15 K at 5 K interval. Excess molar volume https://www.w3.org/1998/Math/MathML"> ( V m E ) , $ (V_{m}^{E} ), $ https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781315102634/08cee6dd-83d2-43a5-b446-9db5a8b5df48/content/inline-math9_1.tif" xmlns:xlink="https://www.w3.org/1999/xlink"/> excess molar isentropic compressibilities https://www.w3.org/1998/Math/MathML"> ( K s , m E ) , $ (K_{s,m}^{E} ), $ https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781315102634/08cee6dd-83d2-43a5-b446-9db5a8b5df48/content/inline-math9_2.tif" xmlns:xlink="https://www.w3.org/1999/xlink"/> and the deviation in refractive index (Δn D )were calculated and fitted to the four-parameter Redlich-Kister polynomial equation. https://www.w3.org/1998/Math/MathML"> V m E $ V_{m}^{E} $ https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781315102634/08cee6dd-83d2-43a5-b446-9db5a8b5df48/content/inline-math9_3.tif" xmlns:xlink="https://www.w3.org/1999/xlink"/> and https://www.w3.org/1998/Math/MathML"> K s , m E $ K_{s,m}^{E} $ https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781315102634/08cee6dd-83d2-43a5-b446-9db5a8b5df48/content/inline-math9_4.tif" xmlns:xlink="https://www.w3.org/1999/xlink"/> were negative, whereasΔn D , was positive for the studied mixtures (except for DEA+ANS, https://www.w3.org/1998/Math/MathML"> K s , m E $ K_{s,m}^{E} $ https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781315102634/08cee6dd-83d2-43a5-b446-9db5a8b5df48/content/inline-math9_5.tif" xmlns:xlink="https://www.w3.org/1999/xlink"/> was found positive in the DEA rich region) for the entire range of composition and at all studied temperatures. Several semiempirical equations were used to predict the refractive index of the mixtures. https://www.w3.org/1998/Math/MathML"> V m E $ V_{m}^{E} $ https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781315102634/08cee6dd-83d2-43a5-b446-9db5a8b5df48/content/inline-math9_6.tif" xmlns:xlink="https://www.w3.org/1999/xlink"/> results have been discussed in terms of Prigogine-FloryPatterson statistical theory.
