Excess molar enthalpies at 298.15 K of (an n-alkyl formate + an n-alkanol) I

Abstract

The excess molar enthalpy HmE has been determined using a Calvet microcalorimeter as a function of mole fraction x at 298.15 K and atmospheric pressure for the eight mixtures {xHCO2(CH2)3CH3 + (1 − x)CnH2n+1OH}(l) (n = 3 to 10). All these mixtures exhibit a positive HmE which increases quasi-regularly with increasing size of the alkyl group of the alkanol. The results indicate the presence of specific interactions. A qualitative interpretation of the results is presented.