Open AccessRefractive Indices of Aqueous Solutions of Isomeric Butylamines at 303.15 K: Experimental and Correlative Approach
Author(s) -
Muhammad A.R. Khan,
Mohammed Sohel,
Md. Ariful Islam,
Faisal I. Chowdhury,
Shamim Akhtar
Publication year - 2021
Publication title -
journal of applied science and process engineering
Language(s) - English
Resource type - Journals
ISSN - 2289-7771
DOI - 10.33736/jaspe.3962.2021
Subject(s) - refractive index , mole fraction , refraction , chemistry , aqueous solution , mathematics , analytical chemistry (journal) , physics , optics , chromatography
Refractive indices () and densities (r) of water (W) + n-butylamine (NBA), + sec-butylamine (SBA) and + tert-butylamine (TBA) systems had been measured in the whole range of composition at 303.15 K, from which deviation in refractive index (DnD ) molar refraction (Rm) and excess molar refraction () had been evaluated. All of the derived properties were fitted to appropriate polynomials. DnD were fitted to the Redlich-Kister polynomial equation. Values of DnD were all positive and were all negative which were attributed to cross hydrogen bonding, specific interactions as well as interstitial accommodation effect. A comparative study of Lorentz-Lorenz (L-L), Weiner (W), Heller (H), Gladstone-Dale (G-D), Arago-Biot (A-B), Eykman (Eyk), Newton (Nw), Eyring-John (E-J) and Oster (Os) relations for determining the refractive index of a liquid had been carried out to test their validity for the three binaries over the entire mole fraction range of butylamines at 303.15 K.