| 1. | Safety |
| 2. |
Objectives/Overview |
| 3. |
Procedures |
|
4. |
Observations |
| 5. | |
| 6. | |
| 7. | |
| 8. | Conclusions |
| 9. | Calculations/Set-Ups |
| 10. | Grading Scale |
| 11. | Review Prelab Questions |
|
12. |
Review Postlab Questions |
Experiment
13
Determining
the Concentration of a Solution: Beer's Law
PRE-LABORATORY QUESTIONS
References:
Brown, Lemay, and Bursten, Chemistry the Central Science, 8th ed.
(2000)
pp. 126-131 (molarity, solution calculations, dilution)
Learning Center: answers to pre- and post-lab questions.
SHOW SET-UP FOR ALL CALCULATION PROBLEMS
1. A student needs to make 10 mL of 0.32 M solution. A stock solution is available, which has a concentration of 0.40 M.
a. How much of the stock solution must be used?
b. Describe the method that would be used to make the new solution. What equipment would be used? How would it be used?
2. A colorimeter will be used to make measurements in this experiment.
a. What will the colorimeter measure?
b. Describe how you will you determine the concentration of your unknown.
