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2000•Journal of Chemical EducationRequires access

A Puzzle Concerning Solution Equilibria

Peter Gans

Open publisher page 7 citations

Abstract

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 p K a ( K a 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.

About this research paper

What this paper is about

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 p K a ( K a 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.

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OpenAlex reports 7 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

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 p K a ( K a 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.

Key concepts: Neutralization, Conjugate acid, Conjugate, Acid–base reaction, Dissociation constant, Acid dissociation constant, Dissociation (chemistry), Chemistry

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