🧪 化學工具

🧪 Henderson–Hasselbalch 方程Buffer Ph 緩衝溶液 pH 計算器，輸入 pKa 與共軛鹼/酸濃度比按 Henderson-Hasselbalch 方程求 pH，用於緩衝體系設計。Buffer Ph - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚗️ 與 [H⁺]（[H⁺] = 10⁻ᴾᴴ）Ph to H pH 與 [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. ⚡ 判斷反應自發性Gibbs Free Energy 吉布斯自由能計算器，輸入焓變、熵變與溫度求 ΔG=ΔH−TΔS 並判斷反應自發方向，用於熱力學分析。Gibbs Free Energy - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚖️ 判斷反應進行的方向Reaction Quotient 輸入反應物與生成物的濃度及各自化學計量係數，計算反應商 Q，並與平衡常數 K 比較，判斷化學反應進行的方向。Reaction Quotient - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚗️ 反應產率（產率 = 實際 / 理論 × 100%）Reaction Yield 由實際產量與理論產量按產率=實際/理論×100% 計算化學反應收率，並提示限制反應物，用於實驗與工藝評價。Reaction Yield - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚛️ 將元素質量百分比換算為原子最簡整數比Empirical Formula 輸入最多三種元素的質量百分比與原子量，自動求其原子數之比並約簡為最簡整數比，得到化合物的實驗式（最簡式）。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（濃度或體積）Dilution C1v1 稀釋公式 C₁V₁=C₂V₂ 計算器，已知任意三項求第四項(濃度或體積)，用於溶液配製與倍比稀釋。Dilution C1v1 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚗️ 當量濃度（N = n·z / V）Normality 當量濃度 = 物質的量 × 當量數 / 體積，常用於酸鹼氧化還原滴定。Normality - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚗️ 摩爾濃度（c = n / V）Molarity 摩爾濃度計算器，由物質的量與溶液體積按 c=n/V 求物質的量濃度，用於溶液濃度配製。Molarity - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. 🧪 根據投料量與化學計量比確定限量反應物與理論產量Limiting Reagent 輸入兩種反應物的質量與摩爾質量，以及反應方程式係數，自動判定哪種是限量反應物。Limiting Reagent - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚖️ 氣體反應平衡常數換算Kp and Kc Converter 輸入 Kc、溫度與氣體摩爾數變化 Δn，求 Kp（R=8.314，T 為開爾文）。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. ⚗️ 沸點升高計算器Boiling Point Elevation 沸點升高線上計算器，基於拉烏爾定律輸入溶質摩爾濃度與沸點升高常數，求得溶液沸點升高值，用於稀溶液依數性分析，純前端。Boiling Point Elevation - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. 🔥 溫度對反應速率常數的影響Arrhenius 阿倫尼烏斯方程計算器，輸入指前因子、活化能與溫度求反應速率常數 k，分析溫度對反應速率的影響。Arrhenius - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚗️ 溶液稀釋（C₁V₁ = C₂V₂）Solution Dilution 依據稀釋前後溶質量守恆 C₁V₁=C₂V₂，輸入其中三項即可求稀釋所需的溶液體積 V₂，用於溶液配製與濃度換算。Solution Dilution - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚗️ 理想氣體體積（V = nRT / P）Ideal Gas Volume 根據理想氣體狀態方程 PV = nRT 計算在給定壓強、溫度、物質的量下的氣體體積。Ideal Gas Volume - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚗️ 理想氣體密度（ρ = PM / RT）Gas Density 理想氣體密度計算器，由壓強、摩爾質量與溫度按 ρ=PM/RT 估算氣體密度，用於氣體狀態分析。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 與 pHpOH and pH Converter pOH 轉 pH 計算器，輸入氫氧根濃度求 pOH 並按 pH+pOH=14 求 pH，用於鹼液分析。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... 💯 由各組分的物質的量求摩爾分數Mole Fraction 摩爾分數計算器，輸入兩種或多種組分物質的量自動歸一化為摩爾分數，用於混合物組成表達。Mole Fraction - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚖️ 由溶質與溶液質量求質量分數（濃度）Quality Fraction Calculator 質量分數計算器，輸入溶質質量與溶液總質量求質量百分比濃度，用於溶液配製與濃度表達。Quality Fraction Calculator - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. 💧 由離子濃度求溶度積或反之Solubility Product 溶度積 Ksp 計算器，輸入陰陽離子濃度與化學計量指數求 Ksp 或反求離子濃度，用於沉澱溶解平衡分析。Solubility Product - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. 🧪 由酸解離常數與濃度估算 pHPh from Ka 弱酸 pH 估算器，輸入弱酸濃度與 Ka 用近似公式求氫離子濃度與 pH，用於酸鹼平衡分析。Ph from Ka - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚗️ 電阻率（ρ = R·A / L）Resistivity from R 電阻率計算器，由測得的電阻、截面積與長度按 ρ=R·A/L 求材料電阻率，用於導體材料評估。Resistivity from R - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚗️ 質量分數（w = m_溶質 / m_總 × 100%）Quality Fraction Calculate 輸入溶質與溶液（或溶劑）的質量，按 w=溶質質量/溶液總質量×100% 計算溶液中溶質的質量分數，用於溶液配製與濃度核算。Quality Fraction Calculate - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚗️ 質量摩爾濃度（b = n / m_溶劑）Molality 輸入溶質物質的量與溶劑質量（kg），按 b=n/m 計算質量摩爾濃度，該濃度不受溫度影響，常用於依數性與熱力學計算。Molality - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚗️ 質量轉物質的量（n = m / M）Mass to Moles 質量轉物質的量計算器，輸入物質質量與摩爾質量按 n=m/M 求摩爾數，用於化學計量換算。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... ⚗️ 道爾頓分壓（Pᵢ = xᵢ · P_總）Partial Pressure 道爾頓分壓計算器，輸入組分摩爾分數與總壓按 Pᵢ=xᵢ·P總 求混合氣體中某組分分壓，用於氣體分析。Partial Pressure - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚗️ 酸鹼中和滴定計算器Acid Base Titration 輸入酸鹼濃度與體積（或當量），計算中和滴定達到等當點所需的體積，輔助化學實驗與含量測定。Acid Base Titration - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools. ⚡ 非標準狀態下的電極電勢Nernst Equation 輸入標準電極電勢、轉移電子數 n、反應商 Q 與溫度，按能斯特方程求非標準狀態下的實際電極電勢，用於電化學分析。Nernst Equation - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Chemistry tools.