V2EX reaction rate

Reaction Rate

释义 Definition(中文)

反应速率:指化学反应进行的快慢,通常表示为反应物浓度随时间减少生成物浓度随时间增加的变化率(如 molLs)。在化学动力学中是核心概念。(在其他语境中也可泛指“反应的速度”,但最常见于化学。)

发音 Pronunciation(IPA)

/rikn ret/

例句 Examples

The reaction rate increases when the temperature rises.
温度升高时,反应速率会增加。

In the experiment, we measured the reaction rate by tracking how quickly the reactant concentration decreased over time.
在实验中,我们通过追踪反应物浓度随时间下降的速度来测量反应速率。

词源 Etymology(中文)

reaction 来自拉丁语 reactio(“回作用、反作用”),由 *re-*(“向后、再次”)+ agere(“做、驱动”)发展而来;rate 来自拉丁语 rata(“固定的、计算好的”),后引申为“比率、速度”。合在一起,reaction rate 字面意思就是“反应的速度/速率”。

相关词 Related Words

文学与经典著作 Literary Works(出现语境)

  • Atkins’ Physical Chemistry(《阿特金斯物理化学》):在化学动力学章节中系统讨论反应速率、速率方程与机理。
  • Laidler, Chemical Kinetics(《化学动力学》):专门著作,反应速率及其测定与理论是全书核心。
  • Arrhenius (1889) 关于温度与速率关系的论文:提出著名的阿伦尼乌斯方程,直接用于描述反应速率随温度变化的规律。
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