8.3. Rates and Reaction Pathways: The "How Fast?" Question

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Kinetics : CompareEnergyProfile (11 Variations)
Consider the following reactions that take place at the same temperature, begin with the same molar concentrations, and whose energy profiles are presented below:

Kinetics

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?

Kinetics

Kinetics : FactorsAffectingRate (7 Variations) Which of the following changes would NOT affect the rate of the reaction of cisplatin with water? Pt(NH_{3})_{2}Cl_{2}(aq) + H_{2}O(l) [Pt(NH_{3})_{2}(H_{2}O)Cl]^{+} + Cl^{-}

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.

Kinetica; An Excel program to Stimulate or Analyze Kinetic DataLeonel Vera, Pedro Ortega, Miguel Guzmán The Excel spreadsheet Kinetica both simulates and analyzes kinetic data for simple rate equations of the form: - d[A]/dt = k [A]^n Instructors or students can generate simulated kinetic data using parameters they specify, or using parameters randomized by Kinetica. The data set that is generated may then be exported for use in exercises, homework, and exams, or may be analyzed directly within Kinetica. A kinetics data set may also be imported from an external source into Kinetica for analysis.

Kinetics

An Excel Program to Study First-Order KineticsKen Muranaka User data can be analyzed to determine what parameter values of the first order rate expression give the closest fit, or data can be generated using user-input values of the rate parameters and random noise levels. Statistical characterizations such as confidence limits and variance are calculated.

Kinetics

ChemPaths 104 F Feb 18John W. Moore Today in Chem 104:
* Lecture: Rates of Reaction
* Reading:
Kotz: Ch. 15, Sec. 1-2
Moore, Ch 13, Sec. 1-2
* Homework #5 due by 11:55 pm F Feb 26
* Excel Assignment due at first discussion section
next week (week of Feb. 21)