Thermochemical study of the 2,5-dibromonitrobenzene isomer: An approach of the energetic study for the other dibromonitrobenzene isomers

Add time:07/26/2019    Source:sciencedirect.com

The standard (p∘=0.1MPa) molar enthalpy of formation, of the 2,5-dibromonitrobenzene, in the crystalline phase, at T = 298.15 K, was derived from the standard massic energy of combustion, in oxygen, at T = 298.15 K, measured by rotating bomb combustion calorimetry. The Knudsen mass-loss effusion technique was used to measure the vapour pressures of the crystal as a function of the temperature and applying the Clausius–Clapeyron equation, the standard molar enthalpy of sublimation of the compound, at T = 298.15 K, was calculated.Compound-ΔcUm∘(cr)/(kJ · mol−1)ΔfHm∘(cr)/(kJ · mol−1)ΔcrgHm∘/(kJ · mol−1)2,5-Dibromonitrobenzene2792.2 ± 1.043.3 ± 1.397.0 ± 0.4

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