Low-temperature heat capacities and standard molar enthalpy of formation of nicotinic acid
文献类型：期刊论文
| 作者 | Di You-Ying; Shi Quan; Tan Zhi-Cheng; Sun Li-Xian |
| 刊名 | acta chimica sinica
 |
| 出版日期 | 2007-09-28 |
| 卷号 | 65期号:18页码:1940-1946 |
| 关键词 | nicotinic acid adiabatic calorimetry low-temperature heat capacity oxygen-bomb combustion calorimetry standard molar enthalpy of formation |
| 英文摘要 | low-temperature heat capacities of nicotinic acid (c6h5no2) were measured by a precision automated adiabatic calorimeter over the temperature range from 78 to 400 k. a polynomial equation of the heat capacities as a function of the temperature was fitted by the least square method. based on the fitted polynomial, the smoothed heat capacities and thermodynamic functions of the compound relative to the standard reference temperature 298.15 k were calculated at the interval of 5 k. the constant-volume energy of combustion of nicotinic acid at t=298.15 k was measured by a precision oxygen-bomb combustion calorimeter to be delta u-c= -(24528.3 +/- 16.1) j center dot g(-1). the standard molar enthalpy of combustion for the compound was determined to be delta h-c(m)circle minus = - (3019.05 +/- 1.98) kj center dot mol(-1), according to the definition of the combustion heat. finally, the standard molar enthalpy of formation for the compound was determined to be delta(f) h-m(circle minus)= - (56.76 +/- 2.13) kj center dot mol(-1), in accordance with hess law. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, multidisciplinary |
| 研究领域[WOS] | chemistry |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000249931300003 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/140440]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Liaocheng Univ, Coll Chem & Chem Engn, Liaocheng 252059, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Di You-Ying,Shi Quan,Tan Zhi-Cheng,et al. Low-temperature heat capacities and standard molar enthalpy of formation of nicotinic acid[J]. acta chimica sinica,2007,65(18):1940-1946. |
| APA | Di You-Ying,Shi Quan,Tan Zhi-Cheng,&Sun Li-Xian.(2007).Low-temperature heat capacities and standard molar enthalpy of formation of nicotinic acid.acta chimica sinica,65(18),1940-1946. |
| MLA | Di You-Ying,et al."Low-temperature heat capacities and standard molar enthalpy of formation of nicotinic acid".acta chimica sinica 65.18(2007):1940-1946. |
入库方式： OAI收割
来源：大连化学物理研究所
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