🧪 当量浓度（N）Normality Calculator

使用说明与常见问题How-to & FAQ

「当量浓度（N）」是什么？What is the Normality Calculator tool?

当量浓度 N = 溶质质量 ÷ 当量质量 ÷ 溶液体积，当量质量 = 摩尔质量 ÷ 当量数（酸的可电离 H⁺ 数、碱的 OH⁻ 数等）。同时给出摩尔浓度。本地处理。Normality N = solute mass ÷ equivalent weight ÷ solution volume, where equivalent weight = molar mass ÷ equivalents (H⁺ per acid, OH⁻ per base, etc.). Molarity is shown too. Processed locally.

如何使用「当量浓度（N）」？How do I use the Normality Calculator tool?

在「当量浓度（N）」中，填写「溶质质量 g」、「摩尔质量 g/mol」、「当量数」、「溶液体积 L」等参数，结果会随输入实时计算并显示在下方。In the Normality Calculator: Fill in "Solute mass g", "Molar mass g/mol", "Equivalents per mole", "Solution volume L"; results are recalculated instantly as you type.

N 和 M 的关系？N vs M?

N = M × 当量数，例如 1 M 硫酸 = 2 N。N = M × equivalents, e.g. 1 M sulfuric acid is 2 N.

能举个计算实例吗？Can you show a worked example?

例如在「当量浓度（N）」中填 溶质质量 g = 49.04，摩尔质量 g/mol = 98.08，当量数 = 2，溶液体积 L = 1，结果区显示：当量浓度：1 N；摩尔浓度：0.5 M；当量质量：49.04 g/eqFor example, entering Solute mass g = 49.04, Molar mass g/mol = 98.08, Equivalents per mole = 2, Solution volume L = 1 in the Normality Calculator gives: Normality: 1 N; Molarity: 0.5 M; Equivalent weight: 49.04 g/eq

哪些输入会被检查？Which inputs are validated?

「当量浓度（N）」会检查这些输入——「溶质质量 g」、「摩尔质量 g/mol」、「溶液体积 L」：必须填写，须大于 0；「当量数」：必须填写；绝对值超过 10¹⁵ 的数也会被拒绝。不符合时结果区显示具体提示，不会给出数字。The Normality Calculator checks its inputs — "Solute mass g", "Molar mass g/mol", "Solution volume L": required, must be greater than 0; "Equivalents per mole": required; numbers above 10¹⁵ in absolute value are rejected too. When a value fails, the result area names the problem instead of showing a number.

有哪些选项可以调整？What options can I adjust?

「当量浓度（N）」的设置：「溶质质量 g」默认 49.04；「摩尔质量 g/mol」默认 98.08；「当量数」默认 2；「溶液体积 L」默认 1。每次生成结果都按当前设置处理。Settings in the Normality Calculator — "Solute mass g" default 49.04; "Molar mass g/mol" default 98.08; "Equivalents per mole" default 2; "Solution volume L" default 1. The result always uses the current settings.

计算结果可以用于作业或工程吗？Can I use the results for homework or engineering?

「当量浓度（N）」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 Normality Calculator 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.

「当量浓度（N）」免费吗？需要注册吗？Is the Normality Calculator free? Do I need an account?

「当量浓度（N）」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 Normality Calculator is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.