The linear relationship between the gas phase standard enthalpies of formation and the substituent constants is discussed.
讨论了气态摩尔标准生成焓与取代基常数间的线性关系。
The affection on the enthalpies of formation aroused by factors, such as size factor, electronegativity, the energy of orbit of selectron etc, is also discussed.
还讨论了尺寸因子，电负性，选择子的轨道能量等因素对形成焓的影响。
Standard enthalpies of formation of simple substances have been discussed in current textbooks. A more exact definition has been proposed.
讨论分析了现行教材中关于单质标准生成焓的规定，提出了较严谨的定义；
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