An isoperibol micro-bomb calorimeter for measurement of the enthalpy of combustion of organic compounds. Application to the study of succinic acid and acetanilide

• Published in: The Journal of chemical thermodynamics Vol. 35; no. 8; pp. 1309 - 1319
• Main Authors: Rojas, Aarón, Valdés, Alejandro
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 2003; Elsevier
• Subjects: Acetanilide; Chemical thermodynamics; Chemistry; Elements, mineral and organic compounds; Energy of combustion; Enthalpy of combustion; Exact sciences and technology; General and physical chemistry; Micro-combustion calorimetry; Succinic acid; Thermodynamic properties; Succinic acid; Energy of combustion; Enthalpy of combustion; Micro-combustion calorimetry; Acetanilide; Heat of combustion; Calorimeter; Enthalpy; Experimental study; Carboxamide; Benzenic compound; Dicarboxylic acid; Thermodynamic properties
• ISSN: 0021-9614; 1096-3626
• DOI: 10.1016/S0021-9614(03)00095-8

A micro static-bomb combustion calorimeter, developed from a 1107 Parr semi-micro bomb, has been provided with a new micro-bomb and calorimetric bucket. In the best conditions of operation, the energy equivalent of this calorimetric arrangement is just ε(calor)=(731.82 ± 0.22) J · K −1, which means an uncertainty of 0.03 per cent for the calibration with benzoic acid NIST 39j. This combustion calorimeter has been used in the measurement of the enthalpy of combustion of the succinic acid and acetanilide, giving −(1489.3 ± 1.6) kJ · mol −1 and −(4222.5 ± 1.1) kJ · mol −1, respectively, for these substances.