Speed of sound, viscosity and refractive index of multicomponent systems: theoretical predictions from the properties of pure components

Thermo-acoustical studies of binary mixture n-octane, n-decane, n-dodecane and n-tetradecane with octan-2-ol and application of theories of sound speed

“…The ultrasonic velocity of a liquid is fundamentally related to the binding forces between atoms or molecules, and has been successfully employed in understanding the nature of molecular interactions in pure liquids and binary and ternary mixtures [4][5][6]. Variations in ultrasonic velocity and related parameters have shed much light upon the structural changes associated with volumetric and thermodynamic Studies of liquid mixtures of weakly [7] or strongly interacting components [8]. The study of molecular associations in organic binary mixtures having an alcohol as one component is of particular interest since alcohols are strongly self-associated liquids with a three-dimensional network of hydrogen bonds [9] and can be associated with any other group having some degree of polar attraction [10].…”

Hybrid optical fiber sensor and artificial neural network system for bioethanol quality control and productivity enhancement

“…% of water concentration in ethanol. The water-ethanol mixture has a volumetric and thermal complex properties [18,19], and we would expect the refractive index changes with the volumetric concentration variation, which follows the binary liquid compounds theory [20]. The relative intensity increases with the increasing temperature values, limited by the pure solution of ethanol and pure water.…”

Refractometric Studies on Molecular Interactions in Six Binary Liquid Mixtures

“…The review of literature [6] on acoustical studies of solution reveals that refractive indices measurements are also used to estimate the different elastic properties of the molecule from which the type of molecular interactions can be very well understood. Pandey et al [7] have made refractive indices measurements in liquid mixtures and have suggested that such studies are very much helpful for understanding of the molecular interactions in the components of the mixture. In addition to binary liquid mixtures, a few ternary, [8,9] mixtures have also been studied employing refractive index measurements.…”