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Hydrogen Ion Concentration
Calculate [H⁺] from pH, pOH, or [OH⁻]
Formulas: [H⁺] = 10-pH | pH + pOH = 14 | [H⁺] × [OH⁻] = 1.0 × 10-14
Input Parameters
Calculation Results
⚠️ The relationship [H⁺] × [OH⁻] = 1.0 × 10-14 is strictly valid at standard room temperature (25 °C / 298 K). At different temperatures, the autoionization constant of water (Kw) shifts, which alters the exact neutral pH point.