Salt Hydrolysis pHChemistry

Salt Hydrolysis Constant (Kh) & Aqueous pH Calculator

Calculate hydrolysis constant (Kh), equilibrium degree of hydrolysis (h), and pH for solutions of salts derived from weak acids or weak bases (e.g. CH3COONa, NH4Cl).

Calculated Result

Salt Solution Equilibrium pH

9.88pH

Calculator Inputs

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Salt Solution Equilibrium pH

9.88pH

Basic Salt Solution (pH > 7): Anion hydrolysis of the weak acid derivative liberates hydroxide ions, imparting alkaline character.

Salt Hydrolysis pH Shift

Solution pH
9.88 pH(100%)

Standard analytical chemistry tool for aqueous ionic salt hydrolysis equilibria.

Calculation Methodology

Weak Acid + Strong Base Salt: Kh = Kw / Ka; pH = 7 + 0.5 * (pKa + log10 C) [basic, pH > 7]. Weak Base + Strong Acid Salt: Kh = Kw / Kb; pH = 7 - 0.5 * (pKb + log10 C) [acidic, pH < 7].

Frequently Asked Questions

Because their constituent ions (e.g., Na+ and Cl-) are exceptionally weak conjugate species that cannot disturb water's autoionization equilibrium, leaving the solution strictly neutral at pH 7.0.

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