Ionization Constant of Weak Electrolyte ( K_a or K_b )
Formula: For a monoprotic weak acid HA: HA ⇌ H⁺ + A⁻, K_a = ([H⁺][A⁻])/([HA]). For a monoprotic weak base B: B + H₂O ⇌ BH⁺ + OH⁻, K_b = ([BH⁺][OH⁻])/([B]).
Syllabus path: Chemical Theories and Laws › Electrolyte Solution Theory
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CSCA Chemistry Formula Reference
Formula and explanation
Formula: For a monoprotic weak acid HA: HA ⇌ H⁺ + A⁻, K_a = ([H⁺][A⁻])/([HA]). For a monoprotic weak base B: B + H₂O ⇌ BH⁺ + OH⁻, K_b = ([BH⁺][OH⁻])/([B]). Applicable conditions: Dilute solution, constant temperature. Description: K_a (acid ionization constant) and K_b (base ionization constant) are equilibrium constants that characterize the strength of a weak acid or weak base. A larger K value indicates a greater degree of ionization.
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Electrolyte Solution Theory
Electrolyte Solution Theory Core Concepts and Learning Objectives This section focuses on chemical reactions in aqueous solutions, centering on the behavior of ions (Ionization, Hydrolysis, Precipitation). This is a high-frequency topic for calculation questions (pH, Ksp) and log…
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