Densities and Excess Molar Volumes of the Ternary Mixture 2-Butanol + Chloroform + Benzene and Binary Mixtures 2-Butanol + Chloroform, or + Benzene over the Temperature Range (288.15 to 313.15) K Densities F and excess molar volumes V E of the 2-butanol + chloroform + benzene ternary mixtures and two binaries, 2-butanol + chloroform and 2-butanol + benzene, have been determined. Experimental F measurements have been performed at six temperatures, (288.15, 293.15, 298.15, 303.15, 308.15, and 313.15) K, and atmospheric pressure with an Anton Paar DNA 5000 digital vibrating tube densimeter. Excess molar volumes V E were correlated by the Redlich-Kister equation for binary mixtures and the Nagata-Tamura equation for ternary mixtures.