Speeds of Sound, Isentropic Compressibilities, and Excess Molar Volumes of an Alkanol + Cycloalkane at 303.15 K. 1. Results for Alkan-1-ols + Cyclohexane

Isentropic compressibilities K S, excess isentropic compressibilities, and excess molar volumes V E have been determined from measurements of speeds of sound u and densities ρ of 10 binary mixtures of ethanol, propan-1-ol, butan-1-ol, pentan-1-ol, hexan-1-ol, heptan-1-ol, octan-1-ol, nonan-1-ol, decan-1-ol, and dodecan-1-ol with cyclohexane at 303.15 K over the whole mole fraction range. The values of decrease with number of carbon atoms of the alkanol going from positive values for ethanol + cyclohexane to negative for dodecan-1-ol + cyclohexane. The change of sign for occurs between hexan-1-ol and heptan-1-ol. The trend of decreasing with the chain length of alkanol is similar to that observed in case of V E . However, the V E values for all 10 mixtures of alkanol with cyclohexane are positive.