Resumen de A Puzzle Concerning Solution Equilibria
It is well known that half-neutralization of a weak acid occurs when the pH of a solution of the acid is adjusted to be numerically equal to pKa (Ka is the dissociation constant of the acid). Under those conditions the concentrations of the two species, the acid and its conjugate base, are equal. A puzzle is presented, which is designed to reinforce understanding of simple acid-base equilibria and to give students an introduction to more complicated equilibria.
