## Chemistry 9th Edition

$K_a$ reaction: The dissociation of an acid in an aqueous solution. $K_a$ constant: The equilibrium constant for an acid ionizing in water. $K_b$ reaction: The dissociation of a base in an aqueous solution. $K_b$ equilibrium constant: The equilibrium constant for a base ionizing in water. Conjugate Acid-Base Pair: The pair consisting of an acid and a base after an acid donates a proton to the base.