9.8. A Deeper Look: Molecular Collisions and Rate Processes

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Kinetics : ConcVsTimeGraph (8 Variations)
The following graph shows the change in concentration as a function of time for the reaction:
2NO_{2}(g) + F_{2}(g) 2NO_{2}F(g)
What do each of the curves A, B, and C represent?

J. Chem. Educ. 1999,76, 1578–1583John Andraos Corrections to the article A Streamlined Approach to Solving Simple and Complex Kinetic Systems Analytically. Andraos, John. J. Chem. Educ.2008, 85, 1624.

Kinetics |

Mechanisms of Reactions |

Theoretical Chemistry

Helping Students Make Sense of Logarithms and Logarithmic RelationshipsEd DePierro, Fred Garafalo, and Rick Toomey This paper summarizes difficulties that chemistry students at all levels exhibit when translating, manipulating, and interpreting mathematical expressions containing logarithms, and offers approaches useful in helping students to overcome those difficulties. DePierro, Ed; Garafalo, Fred; Toomey, Rick T. J. Chem. Educ.2008, 85, 1226.

Kinetics |

Mathematics / Symbolic Mathematics |

Constructivism

An Updated Equilibrium MachineEmeric Schultz Describes a device that can demonstrate equilibrium and the Le Châtelier principle, as well as kinetic and thermodynamic concepts. The device consists of a leaf blower attached to a plastic container divided into two chambers by a barrier of variable size and form. Styrofoam balls can be exchanged across the barrier when various air pressures are applied by the blower. Schultz, Emeric. J. Chem. Educ.2008, 85, 1131.