IB Chemistry R3.1.5 the Ion Product of Water Key Definitions
R3.1.5 The ion product of water (Kw) Key Definitions
Definition
Ion product of water (Kw)
The equilibrium constant for the self-ionisation of water. It equals the product of the hydrogen ion and hydroxide ion concentrations, Kw = [H⁺][OH⁻], and has a value of 1.0 × 10⁻¹⁴ mol² dm⁻⁶ at 298 K.