🧪 化学工具

🧪 Henderson–Hasselbalch 方程Buffer Ph 缓冲溶液 pH 计算器，输入 pKa 与共轭碱/酸浓度比按 Henderson-Hasselbalch 方程求 pH，用于缓冲体系设计。Buffer Ph - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚗️ 与 [H⁺]（[H⁺] = 10⁻ᴾᴴ）Ph to H pH 与 [H⁺]（[H⁺] = 10⁻ᴾᴴ）Ph to H - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚡ 判断反应自发性Gibbs Free Energy 吉布斯自由能计算器，输入焓变、熵变与温度求 ΔG=ΔH−TΔS 并判断反应自发方向，用于热力学分析。Gibbs Free Energy - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚖️ 判断反应进行的方向Reaction Quotient 输入反应物与生成物的浓度及各自化学计量系数，计算反应商 Q，并与平衡常数 K 比较，判断化学反应进行的方向。Reaction Quotient - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚗️ 反应产率（产率 = 实际 / 理论 × 100%）Reaction Yield 由实际产量与理论产量按产率=实际/理论×100% 计算化学反应收率，并提示限制反应物，用于实验与工艺评价。Reaction Yield - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚛️ 将元素质量百分比换算为原子最简整数比Empirical Formula 输入最多三种元素的质量百分比与原子量，自动求其原子数之比并约简为最简整数比，得到化合物的实验式（最简式）。Empirical Formula - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. 💧 已知三者求第四者（浓度或体积）Dilution C1v1 稀释公式 C₁V₁=C₂V₂ 计算器，已知任意三项求第四项(浓度或体积)，用于溶液配制与倍比稀释。Dilution C1v1 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚗️ 当量浓度（N = n·z / V）Normality 当量浓度 = 物质的量 × 当量数 / 体积，常用于酸碱氧化还原滴定。Normality - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚗️ 摩尔浓度（c = n / V）Molarity 摩尔浓度计算器，由物质的量与溶液体积按 c=n/V 求物质的量浓度，用于溶液浓度配制。Molarity - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. 🧪 根据投料量与化学计量比确定限量反应物与理论产量Limiting Reagent 输入两种反应物的质量与摩尔质量，以及反应方程式系数，自动判定哪种是限量反应物。Limiting Reagent - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚖️ 气体反应平衡常数换算Kp and Kc Converter 输入 Kc、温度与气体摩尔数变化 Δn，求 Kp（R=8.314，T 为开尔文）。Kp and Kc Converter - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚗️ 沸点升高计算器Boiling Point Elevation 沸点升高在线计算器，基于拉乌尔定律输入溶质摩尔浓度与沸点升高常数，求得溶液沸点升高值，用于稀溶液依数性分析，纯前端。Boiling Point Elevation - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. 🔥 温度对反应速率常数的影响Arrhenius 阿伦尼乌斯方程计算器，输入指前因子、活化能与温度求反应速率常数 k，分析温度对反应速率的影响。Arrhenius - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚗️ 溶液稀释（C₁V₁ = C₂V₂）Solution Dilution 依据稀释前后溶质量守恒 C₁V₁=C₂V₂，输入其中三项即可求稀释所需的溶液体积 V₂，用于溶液配制与浓度换算。Solution Dilution - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚗️ 理想气体体积（V = nRT / P）Ideal Gas Volume 根据理想气体状态方程 PV = nRT 计算在给定压强、温度、物质的量下的气体体积。Ideal Gas Volume - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚗️ 理想气体密度（ρ = PM / RT）Gas Density 理想气体密度计算器，由压强、摩尔质量与温度按 ρ=PM/RT 估算气体密度，用于气体状态分析。Gas Density - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. 🧪 由 [OH⁻] 求 pOH 与 pHpOH and pH Converter pOH 转 pH 计算器，输入氢氧根浓度求 pOH 并按 pH+pOH=14 求 pH，用于碱液分析。pOH and pH Converter - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the C... 💯 由各组分的物质的量求摩尔分数Mole Fraction 摩尔分数计算器，输入两种或多种组分物质的量自动归一化为摩尔分数，用于混合物组成表达。Mole Fraction - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚖️ 由溶质与溶液质量求质量分数（浓度）Quality Fraction Calculator 质量分数计算器，输入溶质质量与溶液总质量求质量百分比浓度，用于溶液配制与浓度表达。Quality Fraction Calculator - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. 💧 由离子浓度求溶度积或反之Solubility Product 溶度积 Ksp 计算器，输入阴阳离子浓度与化学计量指数求 Ksp 或反求离子浓度，用于沉淀溶解平衡分析。Solubility Product - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. 🧪 由酸解离常数与浓度估算 pHPh from Ka 弱酸 pH 估算器，输入弱酸浓度与 Ka 用近似公式求氢离子浓度与 pH，用于酸碱平衡分析。Ph from Ka - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚗️ 电阻率（ρ = R·A / L）Resistivity from R 电阻率计算器，由测得的电阻、截面积与长度按 ρ=R·A/L 求材料电阻率，用于导体材料评估。Resistivity from R - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚗️ 质量分数（w = m_溶质 / m_总 × 100%）Quality Fraction Calculate 输入溶质与溶液（或溶剂）的质量，按 w=溶质质量/溶液总质量×100% 计算溶液中溶质的质量分数，用于溶液配制与浓度核算。Quality Fraction Calculate - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚗️ 质量摩尔浓度（b = n / m_溶剂）Molality 输入溶质物质的量与溶剂质量（kg），按 b=n/m 计算质量摩尔浓度，该浓度不受温度影响，常用于依数性与热力学计算。Molality - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚗️ 质量转物质的量（n = m / M）Mass to Moles 质量转物质的量计算器，输入物质质量与摩尔质量按 n=m/M 求摩尔数，用于化学计量换算。Mass to Moles - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistr... ⚗️ 道尔顿分压（Pᵢ = xᵢ · P_总）Partial Pressure 道尔顿分压计算器，输入组分摩尔分数与总压按 Pᵢ=xᵢ·P总 求混合气体中某组分分压，用于气体分析。Partial Pressure - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚗️ 酸碱中和滴定计算器Acid Base Titration 输入酸碱浓度与体积（或当量），计算中和滴定达到等当点所需的体积，辅助化学实验与含量测定。Acid Base Titration - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚡ 非标准状态下的电极电势Nernst Equation 输入标准电极电势、转移电子数 n、反应商 Q 与温度，按能斯特方程求非标准状态下的实际电极电势，用于电化学分析。Nernst Equation - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools.