Kb計算機
平衡濃度またはpKbから塩基解離定数Kbを計算します。
返済スケジュール
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はじめに
Kb Calculator — Calculate the base dissociation constant Kb from equilibrium concentrations or pKb. Enter Given, [BH⁺] (mol/L), [OH⁻] (mol/L), [B] (mol/L) to get an instant, accurate result.
計算式
Kb = [BH⁺][OH⁻] / [B] at equilibrium for a weak base B + H₂O ⇌ BH⁺ + OH⁻. Equivalently, Kb = 10^(−pKb).
ステップごとの説明
- Enter the Given.
- Enter the [BH⁺] (mol/L).
- Enter the [OH⁻] (mol/L).
- Enter the [B] (mol/L).
- Click Calculate to see your result instantly.
実例
Example: With Given = concs, [BH⁺] (mol/L) = 0.001, [OH⁻] (mol/L) = 0.001, [B] (mol/L) = 0.1, the Kb Calculator gives Unknown: kb, Kb: 0.00001.
よくある質問
What does a larger Kb mean?
A larger Kb indicates a stronger base — more of it ionizes to produce BH⁺ and OH⁻ at equilibrium.
How are Ka and Kb of a conjugate pair related?
For a conjugate acid-base pair, Ka × Kb = Kw = 1.0×10⁻¹⁴ at 25°C.
What inputs does the Kb Calculator need?
You'll need to provide: Given, [BH⁺] (mol/L), [OH⁻] (mol/L), [B] (mol/L). All fields use sensible defaults, so you can see a working example immediately and then adjust the values to match your own numbers.
How accurate is the Kb Calculator?
The Kb Calculator applies the formula exactly as calculated — Kb = [BH⁺][OH⁻] / [B] at equilibrium for a weak base B + H₂O ⇌ BH⁺ + OH⁻. Equivalently, Kb = 10^(−pKb). — so results are precise for the inputs you provide. Accuracy depends on entering correct, realistic input values.
Is the Kb Calculator free to use?
Yes, the Kb Calculator is completely free, requires no signup, and runs instantly in your browser.
Kb計算機について
The Kb Calculator uses a real, verifiable formula — Kb = [BH⁺][OH⁻] / [B] at equilibrium for a weak base B + H₂O ⇌ BH⁺ + OH⁻. Equivalently, Kb = 10^(−pKb). — so results are accurate every time, not an approximation.