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Goal I. Formulate and understand
rate laws. |
Objectives: To meet the requirements of Goal I,
you must be able to:
- describe the rate
of a chemical reaction in terms of concentration and time.
- understand average
rate, instantaneous rate, and initial rate of a reaction.
- understand rate
constant, order of the reaction with respect to each reactant, half life of a first order reaction and a second order reaction. Understand and use integrated rate laws for first order and second order reactions (sample and follow-up problems 16.4, 16.5).
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Goal II. Understand factors
that affect reaction rates. |
Objectives: To meet the requirements of Goal II,
you must be able to:
- study the relation
between the rate constant and the identity of reactants.
- understand the
effect of a solvent on the reaction and the difference between reactions
in solution and heterogeneous reactions.
- study the Arrhenius
Equation and understand the significance
of activation energy. Work out problems using the Arrhenius
Equation to solve for the new rate constant given the original rate constant, original temperature, and the new temperature (sample and follow-up problem 16.6).
- understand how
catalysts work; homogeneous, heterogeneous and enzymes.
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Goal III. Understand theories
of reaction rates and reaction mechanics. |
Objectives: To meet the requirements of Goal III,
you must be able to:
- understand the
Collision Theory.
- understand the
Activated Complex Theory.
- predict the
rate-determining step and the intermediates, given the reaction mechanism.
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Goal
IV. Formulate and interpret the equilibrium equation for a reversible
chemical reaction. |
Objectives: To meet the requirements of Goal
IV, you must be able to:
-
describe the condition
known as chemical equilibrium by:
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defining “forward” and “reverse” reactions in an equilibrium
system;
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describing the relative rates with which the forward
and reverse reactions occur in a system at equilibrium.
- distinguish between homogeneous
and heterogeneous equilibria, and write the
equilibrium constant expression from a balanced chemical equation
for either type of equilibria.
- relate the magnitude
of the equilibrium constant for a given reaction:
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to the relative amounts of “reactants” and “products”
present at equilibrium;
-
to the speed with which equilibrium is reached, and
explain what is meant saying a reaction “goes to completion.”
- predict the direction
of reaction from the reaction quotient, Qc, and the numerical value of Kc,
given concentrations of all chemical species involved in a reaction system
which is not at equilibrium (sample and follow-up problem 17.5).
- relate the numerical
value of equilibrium constant to how the chemical equation is written and balanced. Understand the relationship between Kc forward, Kc reverse, and the two Kcs for two chemical equations that are related by a numeric factor (sample and follow-up problem 17.3).
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Goal V. Use Le Châtelier's
principle to predict shifts in chemical equilibria. |
Objectives: To meet the requirements of Goal
V, you must be able to:
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describe the effect
on the numerical value of the equilibrium constant Kc for a system
at equilibrium of:
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increasing or decreasing concentration of a reactant
or product;
-
increasing or decreasing the pressure on the system;
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changing the temperature of the system;
-
adding a catalyst to the system.
-
describe qualitatively
the effects on the amount of any specified component of a
system at equilibrium of changing the conditions of the system by:
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changing the equilibrium concentration of a specified
component;
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changing the pressure on the equilibrium system;
-
changing the temperature of the system;
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adding a catalyst to the system.
- understand the relationship between Kc and Kp, convert from one to the other (sample and follow-up problems 17.4). Calculate the Kc given the equilibrium concentration data (sample and follow-up problems 17.6). Calculate equilibrium concentrations given Kc (sample and follow-up problems 17.7 and 17.8). Learn to construct a reaction table (p. 737)
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Unit 3 Assignments
|
Objectives 1 through 10
Read Text:
Video Programs: |
Chapter 16: pp. 673-712
9. Kinetics |
Objectives
11 through 18
Text:
Video Programs: |
Chapter
17: pp. 722-756
10. Chemical equilibrium
11. Le Chalelier's principle |
Textbook
Assignments: |
Read and
Understand all "Sample Problems," "Follow Up Problems" and select any 5 blue-colored problems at the end of the chapters.
The answers
to the Follow Up Problems are at the end of each chapter; the answers to
the blue-colored problems are in Appendix E. |
Mandatory ChemSkill Builder Assignments to be submitted for grade (Scores of 80% or higher on each section will receive full credit): |
Chapter 16.1, 16.2, 16.3, 16.4, 16.5,
16.6 Chemical Kinetics;
Chapter
17.1,
17.2,
17.3,
17.4,
17.5 Chemical Equilibrium; |
Take Exam: |
Exam 3 |
Note: Complete
Solutions, including all units of measurement, must be done for all problems. |
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