Loading subject…
Conjugate acid-base pair
A conjugate acid–base pair consists of two species that differ by exactly one proton ($H^+$).
Equilibrium constant
The equilibrium constant $K$ is a ratio that provides a snapshot of the relative concentrations of products and reactants at equilibrium for a reversible chemical reaction.
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.