Ultrasonic Investigations of Molecular Interaction in Binary Mixtures of Cyclohexanone with Isomers of Butanol

Abstract

Ultrasonic speed, u, and density, ρ, have been measured in binary liquid mixtures of cyclohexanone with the isomers of butanol (n-butanol, sec-butanol, and tert-butanol) at 308.15 K over the entire range of composition. Molar volume (Vm), adiabatic compressibility (ks), intermolecular free length (Lf), acoustic impedance (z), and their excess/deviation along with Δu have been calculated from the experimental data. These values have been fitted to Redlich-Kister type polynomial equation. Positive values of VmE, Δks, LfE and negative values of zE, Δu have been observed for all the liquid mixtures indicating the existence of weak interactions between components. Rupture of H-bond or reduction in H-bond strength of isomers of butanol or breaking of the structure of one or both of the components in a solution causes the existence of dispersions in the present investigated binary mixtures. The data obtained from V-m,1, V-m,2, and excess partial molar volumes V-m, 1E, V-m, 2E, reflects the inferences drawn from VmE. Furthermore, FTIR spectra support the conclusions drawn from excess/deviation properties. The measured values of ultrasonic speed for all the investigated mixtures have been compared with the theoretically estimated values using empirical relations such as, Nomoto, Van Dael and Vangeels, Impedance and Rao specific sound speed.

Thermodynamic Study on Density and Viscosity of Binary Mixtures of Ethyl acetoacetate with (C4-C9) Aliphatic Ketones at (303.15 and 308.15) K

“…The positive E values decrease with increasing chain length. The positive E values indicate specific interactions while the negative E values indicate dispersion forces Nayeem et al [29]. In the present investigation, the positive values of all binary systems may be attributed to the dipoledipole interactions.…”

Comparative Dielectric Study and Molecular Interactions of Binary Mixtures of (Cyclohexanone + 1-Alkanols) and (Cyclopentanone or Cyclohexanone + Cyclohexanol or Cyclohexane) atT= 298.15 K

“…The experimental refractive indices for (cyclohexanone + ethanol or 1-butanol) were compared (Figure a,b) with the available literature data, , which have been reported at the different temperatures. As shown in Figure a–c, the measured density data for the (cyclohexanone +1-alkanols) were also compared with the literature density values reported at different temperatures. − …”

“…Plot the variation of the density of solutions of cyclohexanone in (a) ethanol, (b) 1-butanol, and (c) 1-hexanol as a function of the solute mole fraction at atmospheric pressure; (●) our data ( T = 298.15 K), (○) literature data ( T = 293.15 K), (△) literature data ( T = 298.15 K), (◊) literature data ( T = 293.15 K), (+) literature data ( T = 303.15 K), and (×) literature data ( T = 303.15 K) …”

Physico-chemical Studies of Isomeric Butanols in Aniline with m-Xylene

“…The trend of molar volume assures that temporary or induced dipoles are formed in the systems in varying magnitude that depends on the type of isomer and the degree of interactions are larger in straight chain isomer than in branched type [18].…”