V2EX collision theory

Collision Theory

定义 Definition

碰撞理论:化学动力学中的一种模型,用来解释反应速率如何取决于反应物粒子之间的碰撞频率碰撞取向以及碰撞时是否具有足够的活化能。常用于理解气相反应与简单反应机理(更复杂体系常与过渡态理论等一起使用)。

发音 Pronunciation (IPA)

/kln θri/

例句 Examples

Collision theory says that only particles that collide with enough energy and the right orientation will react.
碰撞理论认为,只有以足够能量并且取向合适发生碰撞的粒子才会发生反应。

In the lab report, we used collision theory to explain why increasing temperature raises the reaction rate, even when the reactant concentrations stay the same.
在实验报告中,我们用碰撞理论解释了为什么即使反应物浓度不变,升高温度仍会提高反应速率。

词源 Etymology

collision 来自拉丁语 collidere(“撞在一起、相击”),由 *col-*(加强/共同)+ laedere(打击、伤害)相关词源发展而来;theory 来自希腊语 theōria(“观察、思考、理论”)合起来表示“用‘碰撞’来解释现象的理论”,在化学领域特指用分子碰撞来解释反应速率的理论框架。

相关词 Related Words

文学与著作中的用例 Literary Works

  • Atkins’ Physical Chemistry(Peter Atkins 等,物理化学教材中讨论反应速率与碰撞模型)
  • Physical Chemistry(Ira N. Levine,化学动力学章节常以碰撞理论引入速率表达)
  • Chemistry: The Central Science(Brown, LeMay 等,普通化学中用碰撞理论解释温度与浓度对速率的影响)
  • Elements of Physical Chemistry(Peter Atkins & Julio de Paula,对碰撞与速率常数的关系有系统阐述)
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