The vapour pressure of benzoic acid

Vapor pressures and standard molar enthalpies, entropies, and Gibbs free energies of sublimation of 2,4- and 3,4-dinitrobenzoic acids

“…The instrumental constants necessary to convert the torsioneffusion angle values to vapor pressures at each selected temperature were determined using crystalline benzoic acid, which have well-known vapor pressures [22,23] that are comparable to with those of the compound studied in the same temperature intervals. The TG (under isothermal (ITG) and non-isothermal (NITG) conditions) and d.s.c.…”

“…The two k cal values are derived for isothermal and nonisothermal methods by carrying out the NITG and ITG experiments under the same condition of the two dinitrobenzoic acids examined on compounds whose vapor pressures for the same temperature intervals investigated are taken from the literature [22,23] (i.e., benzoic acid and acetanilide in this paper). The standard (p°= 0.1 MPa) molar enthalpies of sublimation, D g cr H m ðhTiÞ from the torsion-effusion experiments, and of vaporization, D g l H m ðhTiÞ, from NITG and ITG experiments, have been derived at the averages hTi of the respective experimental temperature ranges from the slopes of these linear equations.…”

An experimental system for measurement of enthalpies of sublimation by d.s.c.

“…For benzoic acid, the sub C p,m reported value (26) is −(48.38 ± 5.00) J · K −1 · mol −1 . Most of the previous measurements of sublimation enthalpy using d.s.c.…”

Investigation of thermodynamic properties of trans-2-cyclohexylcyclohexanol

“…(10) Errors in measurements of saturated vapour pressure did not exceed 5 per cent, as it was established on the base of comparison of our result for urea and benzoic acid with reliable literature data. (11,12) The saturated vapour pressure of trans-2-cyclohexylcyclohexanol in the studied temperature range 293 K to 364 K being rather low (p Q 130 Pa), the equilibrium of reaction ''monomer-associates'' is almost completely displaced to the side of the monomer. That is why, from calculating the Knudsen vapour pressure, we supposed that the vapour has a monomolecular composition.…”