Acids, Bases & Salts
2 terms
Indicator Range
Acids, Bases & Salts
Dimensionless
The span of pH over which an indicator's colour visibly changes, roughly one unit either side of its pKa.
pH = pK_In ± 1
Ionic Product of Water
Acids, Bases & Salts
mol²/L²
The equilibrium constant for the self-ionisation of water, equal to the product of the hydrogen and hydroxide ion concentrations.
Kw = [H⁺][OH⁻] = 1.0 × 10⁻¹⁴