V2EX rate-law

Rate-Law

Definition / 释义

(化学)速率方程(速率定律):描述化学反应速率与反应物浓度(或分压等)之间关系的数学表达式,常写作 rate = k[A]^m[B]^n
(另义,较少见)也可指费率相关的法律(如公共事业收费标准的法规),但在理工语境中通常指化学中的“速率定律”。

Pronunciation (IPA) / 发音(IPA)

/ret l/

Examples / 例句

The rate-law shows how the reaction speed depends on concentration.
速率方程说明反应速率如何随浓度变化。

By fitting experimental data, scientists determined a second-order rate-law and calculated the rate constant.
通过拟合实验数据,科学家确定了一个二级速率方程,并计算出速率常数。

Etymology / 词源

Rate 来自“速度、比率”的含义;law 在科学语境中常指“规律/定律”。合在一起的 rate-law(更常写作 rate law)字面意思就是“关于速率的定律/规律”,用于化学动力学中概括实验发现的速率关系。

Related Words / 相关词

Notable Works / 文学与著作例证

  • Physical Chemistry(Peter Atkins & Julio de Paula)化学动力学章节系统讲解 rate law 的建立与应用。
  • Chemical Kinetics and Dynamics(Jeffrey I. Steinfeld, Joseph S. Francisco, William L. Hase)讨论速率方程与反应机理的对应关系。
  • General Chemistry(如 Petrucci 等教材的通用化学版本)以实验数据推导 rate law 的经典入门示例。
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