Designing a Self-Contained Qualitative Analysis Test for Transition Metal Ions

Y. S. Serena Tan , B. H. Iain Tan , Hian Kee Lee , Yaw Kai Yan and T. S. Andy Hor
National University of Singapore, Department of Chemistry, Kent Ridge, Singapore 119260, REPUBLIC OF SINGAPORE
J. Chem. Educ., 1998, 75 (4), p 456
DOI: 10.1021/ed075p456
Publication Date (Web): April 1, 1998

Abstract

A challenging self-contained qualitative analysis test for transition metal compounds comprising nine unknowns was designed whereby the unknown solutions can be systematically identified, without relying on external reagents, by inter-mixing the unknown samples. The names of the samples are made known, but their correspondence with the samples is concealed. A representative range of transition metal compounds was selected, together with two complementary main-group compounds. This "9-bottle" test encourages logical deduction and analytical thinking and cannot be negotiated by pure regurgitation of memorized facts. It is also more environment-friendly as it avoids the use of any external reagents, thereby reducing waste and circumventing the disposal problems.

Keywords (Audience):

High School / Introductory Chemistry

Keywords (Domain):

Analytical Chemistry

Keywords (Pedagogy):

Testing / Assessment

Keywords (Subject):

Qualitative Analysis

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This article has been cited by 2 ACS Journal articles (2 most recent appear below).

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    Utilizing Problem-Based Learning in Qualitative Analysis Lab Experiments

    Randall W. Hicks and Holly M. Bevsek
    Journal of Chemical Education2012 89 (2), 254-257
    • Utilizing Problem-Based Learning in Qualitative Analysis Lab Experiments

      Randall W. Hicks and Holly M. Bevsek
      Journal of Chemical Education2012 89 (2), 254-257

      A series of qualitative analysis (QA) laboratory experiments utilizing a problem-based learning (PBL) module has been designed and implemented. The module guided students through the experiments under the guise of cleaning up a potentially contaminated ...

  • Cover Image

    What Is That Colorless Solution? A Qualitative Analysis Laboratory for General Chemistry

    William R. Furlong , Michael R. Quackenbush and Ramee Indralingam
    Journal of Chemical Education2009 86 (8), 953
    • What Is That Colorless Solution? A Qualitative Analysis Laboratory for General Chemistry

      William R. Furlong , Michael R. Quackenbush and Ramee Indralingam
      Journal of Chemical Education2009 86 (8), 953

      A first-semester general chemistry laboratory experiment for college is described in which students carry out qualitative analysis to identify seven unknown colorless solutions. The experiment serves to correlate qualitative analysis with classification ...

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  • Received: August 03, 2009

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