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The Chemical Educator

ISSN: 1430-4171 (electronic version)

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Abstract Volume 9 Issue 2 (2004) pp 122-131

Acid-Base Equilibria, Part I. Upper Secondary Students' Misconceptions and Difficulties

Margarita Demerouti, Margarita Kousathana, and Georgios Tsaparlis*

University of Athens, Department of Chemistry, Graduate Program DiCheNET, Athens, Greece, University of Athens, Experimental High School, Athens Greece,, and University of Ioannina, Department of Chemistry, Ioannina, Greece,
Received April 28, 2003. Accepted September 18, 2003.

Published online: 26 February 2004

Abstract. Although several aspects of acid–base chemistry have been treated in the science education literature, a number of issues concerning acid–base equilibria have received little attention. In this paper, the misconceptions of a sample of twelfth-grade Greek students on the subject of acid–base equilibria are explored. Students’ misconceptions and difficulties in understanding and applying the relevant concepts were categorized into seven categories: (a) dissociation and ionization, (b) definition of Brønsted–Lowry acids and bases, (c) ionic equilibria, (d) acid–base neutralization, (e) pH, (f) buffer solutions, and (g) degree of ionization.

Key Words: Research in Teaching and Learning; general chemistry; science education

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Issue date: April 1, 2004

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