STANDARD MOLAR ENTHALPIES OF SOLVATION OF ALIPHATIC ESTERS IN 1,2-DICHLOROETHANE AND N-HEXANE

The molar enthalpies of solution at infinite dilution of methyl-, ethy l-, n-butyl- and n-pentylacetate, and ethylpropionate, ethylbutanoate and ethylhexanoate were obtained by means of calorimetric determinatio ns in 1,2-dichloroethane and n-hexane. From these values and the stand ard molar enthalpy of vaporization, the standard molar enthalpy of sol vation of these esters in both solvents were calculated. These calcula ted values are shown to correlate with the number of methylene groups in the esters.