Volumetric and acoustic properties of ionic liquid, 1-hexyl-3-methylimidazolium bromide in 1-hexanol, 1-heptanol and 1-octanol at T = (298.15–328.15) K

Abstract

ABSTRACT The density ρ and speed of sound u of the binary mixtures (1-hexyl-3-methylimidazolium bromide ([HMIm][Br]) + 1-hexanol or 1-heptanol or 1-octanol) were reported at T= (298.15, 308.15, 318.15 and 328.15) K and atmospheric pressure. Using the experimental-measured data, the molar volume Vm , excess molar volume , isentropic compressibility κ s and isentropic compressibility deviation Δκ s were calculated. Also, the Jouyban–Acree and Redlich–Kister polynomial equations were used for correlation of (ρ, V m, u and κ s) and ( and Δκ s), respectively. The obtained percent average relative deviation %ARD and standard deviation σ show that the studied mixtures can be described well by Jouyban–Acree and Redlich–Kister equations, respectively.