V2EX reaction order

Reaction Order

Definition 定义

反应级数:化学动力学中用来描述反应速率对各反应物浓度依赖程度的指数。某反应对某物质的级数是该物质浓度在速率方程中的指数;总级数是各指数之和。(也常见于讨论零级、一级、二级反应等。)

Pronunciation 发音

/rikn rdr/

Examples 例句

The reaction order is first order in A.
该反应对 A 为一级反应。

By plotting ln(concentration) versus time, we determined the reaction order and proposed a rate law consistent with the experimental data.
通过作 ln(浓度)时间图,我们确定了反应级数,并提出了与实验数据一致的速率方程。

Etymology 词源

reaction 源自拉丁语 reactio(“反向作用/反应”),order 在科学语境中有“次序、阶、级”的含义。合起来的 reaction order 就是“用一个‘阶/级’来表征反应速率对浓度的依赖关系”的意思;这里的 order 更接近数学里的“阶数/次数”。

Related Words 相关词

Literary Works 文学作品

  • Atkins’ Physical Chemistry(Peter Atkins & Julio de Paula,《阿特金斯物理化学》)
  • Chemical Kinetics(Keith J. Laidler,《化学动力学》)
  • Chemical Kinetics and Dynamics(Steinfeld, Francisco & Hase)
  • Elements of Chemical Reaction Engineering(H. Scott Fogler,《化学反应工程要素》)
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