Acid Dissociation Constant
Compute Acid Dissociation Constant using K_a = [H_3O^+][A^−] / [H A].
K_a = [H_3O^+][A^−] / [H A]Open calculator🧪 Category
Acid-Base Chemistry Calculators
pH, pOH, Ka, Kb, Henderson–Hasselbalch, Ksp, buffers, and weak acid/base equilibria.
14 calculators in this category.
Amphiprotic Salt Approximation
Compute Amphiprotic Salt Approximation using pH ≈ (1/2)(pK_a1 + pK_a2).
pH ≈ (1/2)(pK_a1 + pK_a2)Open calculatorBase Dissociation Constant
Compute Base Dissociation Constant using K_b = [H B^+][OH^−] / [B].
K_b = [H B^+][OH^−] / [B]Open calculatorDegree of Dissociation
Compute Degree of Dissociation using α = amount dissociated / initial amount.
α = amount dissociated / initial amountOpen calculatorHenderson–Hasselbalch Equation (acid buffer)
Compute Henderson–Hasselbalch Equation (acid buffer) using pH = pK_a + log([A^−]/[H A]).
pH = pK_a + log([A^−]/[H A])Open calculatorHenderson–Hasselbalch Equation (base buffer)
Compute Henderson–Hasselbalch Equation (base buffer) using pOH = pK_b + log([H B^+]/[B]).
pOH = pK_b + log([H B^+]/[B])Open calculatorpH Definition
Compute pH Definition using pH = −log[H_3O^+].
pH = −log[H_3O^+]Open calculatorPhoton Energy–Wavelength Relation
Compute Photon Energy–Wavelength Relation using E = h c / λ.
E = h c / λOpen calculatorpKa Definition
Compute pKa Definition using pK_a = −log K_a.
pK_a = −log K_aOpen calculatorpKb Definition
Compute pKb Definition using pK_b = −log K_b.
pK_b = −log K_bOpen calculatorpOH Definition
Compute pOH Definition using pOH = −log[OH^−].
pOH = −log[OH^−]Open calculatorSolubility Product
Compute Solubility Product using K_sp = Π[ion]^ν.
K_sp = Π[ion]^νOpen calculatorWeak Acid Approximation
Compute Weak Acid Approximation using [H_3O^+] ≈ √(K_a C_a).
[H_3O^+] ≈ √(K_a C_a)Open calculatorWeak Base Approximation
Compute Weak Base Approximation using [OH^−] ≈ √(K_b C_b).
[OH^−] ≈ √(K_b C_b)Open calculator