Thermochemical properties of alkylbenzoic acids VI. Enthalpies of combustion and formation of the o-, m-, and p-ethylbenzoic acids

Abstract

The energies of combustion of o-, m-, and p-ethylbenzoic acids have been determined using a static bomb calorimeter. The vapour pressures have been measured over a range of temperatures near 298 K by the Knudsen effusion technique. The formation enthalpies in the crystalline state at 298.15 K and the sublimation enthalpies at the mean temperature of the measurements range have been derived for the three acids.