Abstract
Excess molar enthalpies HEm at the temperature 298.15 K and normal atmospheric pressure were obtained as a function of mole fraction x for the five binary mixtures {xCH3CO(CH2)2CH3 + (1 − x)CH3(CH2)m-2CH2OH} (m = 3, 5 to 8) using a Calvet microcalorimeter. In addition, a vibrating-tube densimeter was used to determine the excess molar volumes VEm at the same temperature and pressure. Two methods of correlating the results with a variable-degree polynomial are examined. The experimental results are compared with the predictions of the Nitta and Chao group-contribution model.
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