Acid-Base Equilibria in Aqueous Solutions
Acid-base equilibria in aqueous solutions describes the dynamic balance between hydrogen ion activity and hydroxide ion concentration governed by dissociation constants within a water-based solvent system. This theoretical framework relies on formal definitions of acids as proton donors (Brønsted-Lowry) or electron pair acceptors (Lewis), quantifying strength through equilibrium constants ($K_a$, $K_b$). As a fundamental subfield of aqueous solution chemistry, it establishes the mathematical rules for pH prediction and speciation distribution essential to understanding broader chemical reactivity.
Autoionization of Water K_w and the pH Scale in Acid-Base Equilibrium
Acid-base theory defines acids and bases through progressively broader frameworks—Arrhenius (ion concentration in water), Brønsted-Lowry (proton donor/acceptor), and Lewis (electron-pair acceptor/don…