Studies of mixing properties of binary systems of Di-n-Butylamine (cas 111-92-2) with alkanols at T = (293.15, 298.15, 303.15, 308.15 and 313.15) K
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Add time:08/22/2019 Source:sciencedirect.com
This article reports experimental density (ρ) and speed of sound (u) of binary mixtures containing di-n-butyl amine with 1-propanol, 1-butanol, 1-pentanol, 2-propanol over entire composition range at temperature ranging from 293.15 K to 313.15 K and at atmospheric pressure. Excess molar volume (VmE), excess isentropic compressibility (κsE), and deviation in speed of sound (uD) have been calculated using experimental densities and speeds of sound values at all temperatures. Along with these properties, apparent molar volume (Vφ , i), partial molar volume (V¯m,i), excess partial molar volume (V¯m,iE) and excess partial molar volume at infinite dilution (V¯m,iE,∞) have also been calculated. All the calculated excess properties are analyzed in terms of effect of chain length, position of OH group and effect of temperature on the intermolecular interactions. Redlich-Kister type polynomial is used to correlate the calculated excess and deviation properties to the composition. Correlation is done using method of least squares for the estimation of binary coefficients and standard errors. Further, PFP theory is also used to calculate VmE and have been compared with experimental results.
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