Combustion energies of hippuric acid and acetanilide
An, XW; He, LL; Wu, SX; Hu, RZ
AbstractA new precision rotating-bomb calorimeter has been built. It can be operated in the isoperibol or in the adiabatic mode. The data of the measured temperature could be collected automatically by a microcomputer and the result of determination could be calculated by using appropriate software. In the isoperibol mode, the apparatus was calibrated by using NBS39i benzoic acid with a standard deviation of the mean of +/- 0. 006%. The combustion energies of hippuric acid and acetanilide have been determined to be -(23 542.7 +/- 0. 9) J/g and -(31 245. 8 +/- 2. 4) J/g(mean and its standard deviation) respectively. The uncertainties of these results were estimated as twice the overall standard deviation of mean, to be +/-4. 5 J/g and +/-7. 5 J/g, respectively. These results are in agreement with the recommended values. The properties of the two compounds as the reference materials for combustion calorimetry concerning compounds containing C, H, O and N with a low nitrogen content have been discussed.
KeywordEnergy Of Combustion Hippuric Acid Acetanilide Reference Material Rotating-bomb Calorimeter
Indexed BySCI
WOS IDWOS:000182543000033
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Document Type期刊论文
Corresponding AuthorAn, XW
Affiliation1.Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China
2.Xian Modern Chem Res Inst, Xian 760065, Peoples R China
Recommended Citation
GB/T 7714
An, XW,He, LL,Wu, SX,et al. Combustion energies of hippuric acid and acetanilide[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2003,24(2):329-331.
APA An, XW,He, LL,Wu, SX,&Hu, RZ.(2003).Combustion energies of hippuric acid and acetanilide.CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,24(2),329-331.
MLA An, XW,et al."Combustion energies of hippuric acid and acetanilide".CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE 24.2(2003):329-331.
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