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ERIC Number: EJ943662
Record Type: Journal
Publication Date: 2011-Sep
Pages: 5
Abstractor: As Provided
Reference Count: 16
ISSN: ISSN-0021-9584
Laboratory Inquiry for Determining the Chemical Composition of a Component in a Daily Use Detergent: Sodium Sesquicarbonate
Koga, Nobuyoshi; Kimura, Tomoyasu; Shigedomi, Kana
Journal of Chemical Education, v88 n9 p1309-1313 Sep 2011
An inquiry-based laboratory activity to determine the chemical composition of a component in alkaline detergents, sodium sesquicarbonate (SSC), is proposed. On the basis of introductory demonstrations by the instructor on the chemical properties and reactions of SSC, students propose the hypothetical composition of SSC and possible quantitative experiments to determine the chemical composition by fully utilizing their knowledge of sodium carbonate and sodium hydrogen carbonate. The composition is determined by neutralization titration and gravimetric analyses for the thermal decomposition and the reaction with acid. The usefulness of the present inquiry-based activity in a chemistry course at high school and in a general chemistry course at university or college is discussed by reviewing the results of the practical applications to students' laboratory. (Contains 1 table and 3 figures.)
Division of Chemical Education, Inc and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Elementary Secondary Education; High Schools; Higher Education; Postsecondary Education; Secondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A