Organic Chemistry Semester 1 LABORATORY MANUAL - Moravian ...

Part V. Experiments 34 Fall 2010
Experiment 6
How Can We
Tell if Two
Solid
Compounds
Are the
Same or
Different
A. Pre-lab Preparation Assignment:
1. Read: This handout
2. Read: Classification of organic compounds from their solubilities in aqueous media:
Lab Manual Appendix p. A1
Infrared spectroscopy:
Lab Manual Appendix p. C1
Padías pp. 64-66.
3. Work through the Infrared Spectroscopy link on the Experiment 6 page of the course
website.
4. Complete the electronic Prelab Questions (course website) by 8:00 PM, Monday,
October 25 on the Course Blackboard Site as explained on the Course Information
page.
5. Consider possible claims and warrants relative to the QOW (See below)
6. In your lab notebook: (See Lab Manual pp. 15-17 for format.)
a. Enter the title of Experiment 6 and QOW on the appropriate first left-hand page.
b. Up-date the Table of Contents.
7. Bring your notebook and your initial claims and warrants concerning the QOW to the
AM lab discussion period on Tuesday, October 26.
B. Objectives:
1. To gain experience with obtaining infrared spectra of solid compounds.
2. To gain experience with determining solubilities of solid compounds in aqueous acid &
base solutions.
3. To discover a logical approach for determining if two solid samples contain the same
compound.
C. Question of the Week:
What measurements can allow us to distinguish one compound
from another
D. Key Terms/concepts/techniques:
• Infrared spectra.
• Acid-Base solubility
E. Introduction:
In Experiment 5 each student was given a sample of a solid organic compound. However,
there are fewer different compounds than there are students in each lab section. In fact, there
is more than one student per compound and more than one compound per lab section. The
ultimate goal of Experiment 6 is for each student to identify the group of labmates who have