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化学反应中的焓变△H°和自由焓变△G°是化学热力学的重要概念。目前国内发行的《物理化学》以及《普通化学》教材中,都包括达方面的内容。但是各书对于化学反应中△H°和△G°单位的规定却不相同。比较早一点出版的书规定为[焦耳],1980年以后出版的书有的仍规定为[焦耳],有的规定为[焦耳·摩尔~(-1)]。近年来有许多同志发表文章和讲话,主张使用[焦耳·摩尔~(-1)]。我们想通过本文说明,达两个单位沿用[焦耳]比较合理。
The enthalpy change △ H ° and the free enthalpy change △ G ° in chemical reactions are important concepts of chemical thermodynamics. Currently published in the “Physical Chemistry” and “General Chemistry” teaching materials, including aspects of the content. However, the regulations for ΔH ° and ΔG ° units in the chemical reactions are not the same. The book published earlier was [Joule] and the books published after 1980 were still [Joule] and some were [Joule-Moore ~ (-1)]. In recent years, many comrades have published articles and speeches advocating the use of [Joule Moore ~ (-1)]. We would like to illustrate through this article that it is more reasonable for up to two units to use [Joule].