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自由能-氧化态图是 A.A.Frost于1950年首先提出来的,现已在国外一些无机化学教本和参考书中被采用。它是用图解的方式直观而简明地表示出自由能与标准电极电位的数据及其关系;方便地说明了一些氧化还原反应自发进行的方向及趋势的大小;对于一些多价态的元素的单质和化合物发生歧化反应的情况以及同一列过渡元素的化学性质的变化规律,也都能给出明确的半定量的说明。本文主要介绍该图在无机化学教学中的应用。
Free energy - oxidation state diagram is A.A.Frost first proposed in 1950, now in some foreign inorganic chemistry textbooks and reference books are used. It is a graphical way to intuitively and concisely show the free energy and the standard electrode potential data and its relationship; conveniently describes some of the redox reactions spontaneous direction and size of the trend; for some elements of multivalent state elements And the case of disproportionation reaction of compounds and the variation of the chemical properties of the transition elements in the same column all give clear and semi-quantitative explanations. This article mainly introduces the application of the figure in inorganic chemistry teaching.