Lesson 8: Objectives
Purpose:
To account for factors affecting the rate of a chemical reaction and to use them to explain chemical equilibrium.
You will have completed this lesson when you can:
1. Describe the chemical reaction process using the collision theory.
2. Describe the bonding and energy changes that take place during chemical reactions.
3. Draw, label, and interpret reaction diagrams.
4. Do calculations involving amounts of chemicals and heats of reaction ( DH).
5. List the factors which affect reaction rates.
6. Describe how and why the reaction rate is affected by:
a. concentrations of reactants
b. surface area of solid reactants
c. temperature
d. activation energy
e. catalyst
7. Use the collision theory to explain how chemical equilibrium is attained.
8. Use the collision theory to explain how chemical equilibrium is altered.
9. Use the collision theory to explain the effects of the following on systems at
equilibrium:
a. change in concentrations
b. change in temperature
c. change in pressure
d. competing reactions
10. Write equilibrium constant expressions for a variety of chemical reactions.
11. Calculate the numerical value of equilibrium constants given the equilibrium concentrations (or similar data).
12. Calculate the concentration of one substance at equilibrium given the concentrations of the other substances and the value of the equilibrium constant.
ASSIGNMENTS:
Outside Reading (optional): Find the following topics in your text and read about them:
Reaction Rates
Collision Theory
Heat of Reaction ( DHrx)
Reaction Diagrams
Equilibrium Constants
To be turned in:
Lab report on Exercises 8 and 9
Problem set