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题名: Heat Capacities and Thermodynamic Properties of (3,4-Dimethoxyphenyl)Acetonitrile (C10H11NO2)
作者: 孟庆芬 ;  Zhang, Jing-Nan ;  Tan, Zhi-Cheng ;  董亚萍 ;  李武 ;  Shi, Quan
刊名: JOURNAL OF CHEMICAL AND ENGINEERING DATA
出版日期: 2009
卷号: 54, 期号:2, 页码:232-235
语种: The heat capacities of (3,4-dimethoxyphenyl) acetonitrile were measured by a small sample precision automated adiabatic calorimeter over the temperature range from (78 to 399) K. A melting phase transition was observed in the experimental range. The melting temperature, the molar enthalpy, and entropy of the phase transition were determined to be (336.818 +/- 0.005) K, (24.72 +/- 0.14) kJ.mol(-1), and (73.40 +/- 0.40) J.K-1.mol(-1). The mole fraction purity of the sample used in the adiabatic calorimetric study was determined to be 0.99602 according to the van't Hoff equation. The thermodynamic functions, (H-T - H-298.15 K) and (S-T - S-298.15 K), were calculated. The standard molar energy and enthalpy of combustion have been determined, Delta U-c(m) (C10H11NO2, s) = -(5297.97 +/- 2.45) kJ.mol(-1) and Delta H-c(m)0 (C10H11NO2, s) = -(5301.07 +/- 2.45) kJ.mol(-1), by means of a precision oxygen-bomb combustion calorimeter at T = 298.15 K. The standard molar enthalpy of formation has been derived, Delta H-f(m)0 (C10H11NO2, s) = - (206.10 +/- 3.97) kJ.mol(-1). The heat capacities of (3,4-dimethoxyphenyl) acetonitrile were measured by a small sample precision automated adiabatic calorimeter over the temperature range from (78 to 399) K. A melting phase transition was observed in the experimental range. The melting temperature, the molar enthalpy, and entropy of the phase transition were determined to be (336.818 +/- 0.005) K, (24.72 +/- 0.14) kJ.mol(-1), and (73.40 +/- 0.40) J.K-1.mol(-1). The mole fraction purity of the sample used in the adiabatic calorimetric study was determined to be 0.99602 according to the van't Hoff equation. The thermodynamic functions, (H-T - H-298.15 K) and (S-T - S-298.15 K), were calculated. The standard molar energy and enthalpy of combustion have been determined, Delta U-c(m) (C10H11NO2, s) = -(5297.97 +/- 2.45) kJ.mol(-1) and Delta H-c(m)0 (C10H11NO2, s) = -(5301.07 +/- 2.45) kJ.mol(-1), by means of a precision oxygen-bomb combustion calorimeter at T = 298.15 K. The standard molar enthalpy of formation has been derived, Delta H-f(m)0 (C10H11NO2, s) = - (206.10 +/- 3.97) kJ.mol(-1).
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内容类型: 期刊论文
URI标识: http://ir.isl.ac.cn/handle/363002/2117
Appears in Collections:青海盐湖研究所知识仓储(2014年之前)_期刊论文

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Recommended Citation:
Meng, Qing-Fen,Zhang, Jing-Nan,Tan, Zhi-Cheng,et al. Heat Capacities and Thermodynamic Properties of (3,4-Dimethoxyphenyl)Acetonitrile (C10H11NO2)[J]. JOURNAL OF CHEMICAL AND ENGINEERING DATA,2009,54(2):232-235.
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