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• A Diode-Laser Based Automated Timing Interface for Rapid Measurement of Liquid ViscosityJournal of Chemical Education

  • A Diode-Laser Based Automated Timing Interface for Rapid Measurement of Liquid Viscosity

    R. Craig Urian and Lutfur R. Khundkar
    Journal of Chemical Education 1998 75 (9), p 1135

    Abstract:

    We describe an exercise in experimental design suitable for the undergraduate laboratory, involving the construction of an automated timing interface for laminar liquid flow in glass. In many instructional physical chemistry laboratories, viscometry is ...

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• Validity of the Quasi-Stationary-State Approximation in the Case of Two Successive Reversible First-Order ReactionsJournal of Chemical Education

  • Validity of the Quasi-Stationary-State Approximation in the Case of Two Successive Reversible First-Order Reactions

    V. Viossat and R. I. Ben-Aim
    Journal of Chemical Education 1998 75 (9), p 1165

    Abstract:

    This paper finds the conditions for the validity of the quasi-stationary-state approximation (QSSA) by the study of factor DSS (deviation from the quasi-stationary state) versus time for the mechanism A <=> B <=> C and treats the mechanisms A <=> B â’> C ...

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• Chemistry Time: Factors Affecting the Rate of a Chemical ReactionJournal of Chemical Education

  • Chemistry Time: Factors Affecting the Rate of a Chemical Reaction

    Journal's Editorial Staff
    Journal of Chemical Education 1998 75 (9), p 1120A

    Abstract:

    This activity can be used to introduce a unit on chemical kinetics, but it is simple enough to be used in a discussion of chemical reactions or experimental methods/procedures during the first weeks of the semester. The activity involves reacting ...

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