pH and pOH Relation
Also known as pH plus pOH equals 14
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Water constantly ionizes into H⁺ and OH⁻, and at 25 °C the product of their concentrations is fixed at Kw = 10⁻¹⁴. Taking logarithms turns that product into a sum: pH + pOH = 14 (the precise value is 13.995). The relation holds for every aqueous solution — but only at 25 °C, since Kw grows with temperature; near boiling, neutral water has a pH close to 6.1.
pH and pOH Relation
Where
- = pH
- = pOH
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