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🔥 活化能计算器(阿伦尼乌斯方程)Activation Energy Calculator (Arrhenius)
由两个温度下的速率常数,按阿伦尼乌斯方程 ln(k₂/k₁) = (Eₐ/R)(1/T₁ − 1/T₂) 计算活化能 Eₐ 和指前因子 A;也可由 Eₐ 预测另一温度下的速率常数。Calculate the activation energy Eₐ and pre-exponential factor A from rate constants at two temperatures with the Arrhenius equation ln(k₂/k₁) = (Eₐ/R)(1/T₁ − 1/T₂), or predict a rate constant at another temperature from Eₐ.
使用说明与常见问题How-to & FAQ
「活化能计算器(阿伦尼乌斯方程)」是什么?What is the Activation Energy Calculator (Arrhenius) tool?
由两个温度下的速率常数,按阿伦尼乌斯方程 ln(k₂/k₁) = (Eₐ/R)(1/T₁ − 1/T₂) 计算活化能 Eₐ 和指前因子 A;也可由 Eₐ 预测另一温度下的速率常数。Calculate the activation energy Eₐ and pre-exponential factor A from rate constants at two temperatures with the Arrhenius equation ln(k₂/k₁) = (Eₐ/R)(1/T₁ − 1/T₂), or predict a rate constant at another temperature from Eₐ.
如何使用「活化能计算器(阿伦尼乌斯方程)」?How do I use the Activation Energy Calculator (Arrhenius) tool?
在「活化能计算器(阿伦尼乌斯方程)」中,填写「求解」、「速率常数 k₁」、「温度 T₁ °C」、「速率常数 k₂」、「温度 T₂ °C」等参数,结果会随输入实时计算并显示在下方。In the Activation Energy Calculator (Arrhenius): Fill in "Solve for", "Rate constant k₁", "Temperature T₁ °C", "Rate constant k₂", "Temperature T₂ °C"; results are recalculated instantly as you type.
阿伦尼乌斯方程?What is the Arrhenius equation?
k = A·e^(−Eₐ/RT)。两个温度相除得 ln(k₂/k₁) = (Eₐ/R)(1/T₁ − 1/T₂),所以 Eₐ = R·ln(k₂/k₁) ÷ (1/T₁ − 1/T₂)。温度须用开尔文,工具会把 °C 加上 273.15。k = A·e^(−Eₐ/RT). Dividing at two temperatures gives ln(k₂/k₁) = (Eₐ/R)(1/T₁ − 1/T₂), so Eₐ = R·ln(k₂/k₁) ÷ (1/T₁ − 1/T₂). Temperatures must be in kelvin; the tool adds 273.15 to °C.
「温度每升 10 °C 速率翻倍」对吗?Does the rate double every 10 °C?
这只是室温附近、Eₐ 约 50 kJ/mol 时的粗略经验。用本工具输入 Eₐ 可以算出具体倍数。Only as a rough rule near room temperature for Eₐ around 50 kJ/mol. Enter your Eₐ here to get the actual factor.
计算结果可以用于作业或工程吗?Can I use the results for homework or engineering?
「活化能计算器(阿伦尼乌斯方程)」使用教科书标准公式(公式写在说明和常见问题中),适合学习和估算核对;涉及安全的工程设计请以规范和实测为准。The Activation Energy Calculator (Arrhenius) uses standard textbook formulas (given in the description and FAQ), which is good for learning and checking estimates; for safety-critical engineering follow codes and measured values.
「活化能计算器(阿伦尼乌斯方程)」免费吗?需要注册吗?Is the Activation Energy Calculator (Arrhenius) free? Do I need an account?
「活化能计算器(阿伦尼乌斯方程)」完全免费,无需注册或安装,打开网页即可使用,手机和电脑都能用;输入的内容只在你的浏览器本地处理。The Activation Energy Calculator (Arrhenius) is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.