The volume of mixing, speed of sound, and viscosity of binary liquid mixtures composed of butyl acetate + o-xylene, + m-xylene, and + p-xylene have been measured at 303.15 K. The excess volumes and deviations in isentropic compressibility and viscosity are discussed in terms of molecular interaction between like and unlike components.
Excess volume data on mixing for binary mixtures of y-Butyrolactone with propan-1-01. butan-1-01. pentan-1-01. hexan-1-01, propan-2-01, 2 methyl propan-1-01, 3 methyl butan-1-01. have been determined at 303.15 K . The V 6 values are negative over the whole range of composition in mixtures containing propan-1-01, propan-2-01, butan-1-01, 2 methyl propan-1-01, and 3 methyl butan-1-01, In pentan-1-01, however. V 6 is negative at lower molefractions and positive at higher molefractions, whereas in hexan-1-01 the value of V E are positive throughout the entire concentration range, which indicates significant interaction between y-butyrolactone and the aliphatic and isomeric groups. These values are attributed to weak complex formation and predominating de-association of associated liquids by y-butyrolactone. The results are ascribed to interactions between unlike molecules.
Excess volumes and the speed of sound of five ternary mixtures of 2-methoxyethanol(l) + butyl acetate (2) + benzene (3), + toluene (3), + chlorobenzene (3), + bromobenzene (31, and + nitrobenzene (3) have been measured a t 303.15 K. The excess volumes exhibit positive deviation over the entire range of composition in the system 2-methoxyethanol(l) + butyl acetate (2) + benzene (3) and sigmoid behavior in the case of the remaining systems. The deviation in the isentropic compressibility exhibits a sigmoid behavior in all the mixtures. The results were compared with those predicted by empirical equations.
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