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KMID : 1059520130570020279
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Journal of the Korean Chemical Society
2013 Volume.57 No. 2 p.279 ~ p.288
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Analysis of Chemistry Textbook Content and Teachers' Recognitions about Ionization and Ionization constant of Strong Acid
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Paik Seoung-Hey
Go Hyung-Suk
Jeon Min-Cheol
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Abstract
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In this study, we analyzed the values of ionization and ionization constants in the chemistry textbooks developed during 1945-2009 year. The chemistry teachers compared strength of strong acids in aqueous solution by questionnaire. In the questionnaire, we searched chemistry teachers' cognitions about the discordance reason of ionization constant formulation and the values in the textbooks. The subjects were 46 chemistry teachers. As results, the teachers compared the strength of strong acids in aqueous solution based on the ionization and ionization constant values in the textbooks. They didn’t notice the problem of discordance of ionization constant formulation and the values in the textbooks. Even though they recognized the problem, they could not find the solution, and thought the problem arrived by experiment error or measurement error.
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KEYWORD
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Chemistry textbook, Chemistry teacher, Strength of strong acid, Ionization constant, Ionization
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