化学学报 ›› 1987, Vol. 45 ›› Issue (1): 52-54. 上一篇    下一篇

研究论文

对二甲氧基苯的标准生成焓

阎海科;卞锦儒;顾建国;胡日恒   

  1. 中国科学院化学研究所
  • 发布日期:1987-01-15

The enthalpy of standard formation of p-dimethoxybenzene

YAN HAIKE;BIAN JINRU;GU JIANGOU;HU RIHENG   

  • Published:1987-01-15

本文报道了用精密转动弹量热计测定对二甲氧基苯的燃烧热和升华热并由此计算出固态和气态下对二甲氧基苯的标准生成焓.结果表明数据的测不准性为平均值总标准偏差的二倍.

关键词: 热力学性质, 苯 P, 甲氧基, 生成焓, 燃烧热, 升华热

The enthalpies of combustion and sublimation of p-dimethoxybenzene were measured by using a rotating bomb calorimeter and a sublimation calorimeter, resp. The standard formation enthalpies were calculated to be DH癴(C8H10O2, s, 298.15 K) = -296.72 ?0.96 kJ.mol-1 and DH癴(C8H10O2, g, 298.15 K) = -215.86 ?1.11 kJ.mol-1, resp. Uncertainties given are twice the overall mean standard deviation.

Key words: THERMODYNAMIC PROPERTIES, BENZENE P, METHOXY GROUP, ENTHALPY OF FORMATION, COMBUSTION HEAT, SUBLIMATION HEAT

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