英语词汇“Dissociation Energy”是什么意思，翻译、用法及简单造句-英汉双解词典-英汉网

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单词	Dissociation Energy
释义	Dissociation Energy 中文百科键离解能 Bond-dissociation energy （重定向自Dissociation Energy）键离解能（Bond dissociation energy）缩写为 D₀ 或 BDE，是绝对零度时共价键均裂生成原子或自由基的反应中焓的变化。以乙烷（CH₃CH₃）为例，C－H键的第一离解能为： $\rm \ CH_3CH_2\!-\!H \ \rightarrow \ CH_3CH_2\cdot \ + \ \cdot H$ $\rm \ D_0=\Delta H = 101.1 kcal/mol \ \ (423.0 kJ/mol)$ 键离解能是键强度的一种量度。键的离解能较小，键更容易裂解。多原子分子的键离解能与键能是两个不同的概念。英语百科 Bond-dissociation energy 键离解能（重定向自Dissociation Energy） In chemistry, bond-dissociation energy (BDE) or D₀, is one measure of the strength in a chemical bond. It can be defined as the standard enthalpy change when a bond is cleaved by homolysis, with reactants and products of the homolysis reaction at 0 K (absolute zero). For instance, the bond-dissociation energy for one of the C–H bonds in ethane (C₂H₆) is defined by the process:
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更新时间：2025/6/18 16:50:08