Viscosities and excess energy of activation for viscous flow for binary mixtures of tetrahydrofuran with 1-butanol, 2-butanol and 1-chlorobutane at 283.15, 298.15 and 313.15 K

Abstract

Kinematic viscosities of binary mixtures composed of tetrahydrofuran with 1-butanol, 2-butanol and 1-chlorobutane have been measured at 283.15, 298.15 and 313.15 K and atmospheric pressure for the whole range of compositions. The dynamic viscosity, the excess viscosity and the excess energy of activation for viscous flow were also calculated. The excess viscosity shows negative deviations from ideal behavior for the mixtures tetrahydrofuran with 1-butanol and 2-butanol and a small positive deviation for the binary tetrahydrofuran + 1-chlorobutane system. The experimental results have also been used to test some empirical and semiempirical equations adopted previously to correlate viscosity - composition data

Ultrasonic Speed and Related Thermo-acoustical Parameters of Solutions of 1,1′-Bis(3-methyl-4-ethoxyacetylphenoxy)cyclohexane at Four Different Temperatures

“…From the stock solutions a series of dilute solutions (0.1-0.01 molÁdm -3 ) were prepared in air-tight measuring flasks. The q, g and U data of pure solvents along with literature values [24][25][26][27][28][29][30][31][32][33][34] are reported in Table 1.…”

Viscometric Studies of Binary Mixtures of Ethyl Acetoacetate with (C4-C9) Aliphatic Ketones at 298.15 K

“…The positive excess viscosities, η E , values are indicative of specific interactions [19][20][21], while the negative excess viscosities (η E ) values indicate that dispersion forces are dominant. Furthermore, the existence of dispersion forces indicates that component molecules have different molecular size and shape [22,23]. The magnitude of the negative deviation of η E decreases as the chain length increase; this suggests that the strength of interaction between unlike molecules become weaker as chain length increases [24].…”

Thermo-Acoustical Study of Biologically Active 1,1’-Bis(3-Methyl-4-Carboxyethylphenoxy) Cyclohexane at Four Different Temperatures

“…Ltd. Mumbai and were purified according to literature methods [18]. The density (ρ), viscosity (η) and ultrasonic speed (U) of pure solvents were compared with the literature values [19][20][21][22][23][24][25][26][27][28][29] and are shown in Table 1.…”