What is K sub w?

Answer 1

Kₕ, or the ion product of water, is a constant that represents the equilibrium concentration of hydrogen ions (H⁺) and hydroxide ions (OH⁻) in pure water at a specific temperature. At 25°C, Kₕ is approximately 1.0 x 10⁻¹⁴, meaning that the concentrations of H⁺ and OH⁻ are both about 1.0 x 10⁻⁷ M. This constant is crucial for understanding acid-base chemistry and the pH scale, as it defines the balance between acids and bases in aqueous solutions.