INTRODUCTORY ORGANIC CHEMISTRY
LABORATORY MULTIMEDIA GUIDE

LAB 1 - MELTING POINTS

LAB 1 - MELTING POINTS OVERVIEW:

(Full text)

1. Standard compounds will be available on the reagent shelf. The unkown will be in your drawer.

2. To observe the effect of mixing two different compounds of similar m.p, prepare one capillary tube with pure A, one with A and B mixed, and one with pure B.

3. Identification of your unknown: Record the number of your unknown and then prepare a capillary for determining its melting point. The sample will be used to determine a rough melting point, so that you can choose the two best possibilities from the standards for further comparison.

4. Attach m.p tubes prepared in steps 2 and 3 to labeled paper slits in paper in the order listed in your data table. Take the tubes to an available Hoover apparatus and insert the tubes in the order shown in your data table. As the samples melt, record the melting point range of each sample directly in the table in your lab notebook.

5. Your unknown is one of the compounds listed in your prelab assignment. Devise a procedure to identify your unknown and describe the procedure in your lab notebook.

PLEASE WATCH THE SAFETY VIDEO AND READ
THE PRECAUTIONS + LAB REGULATIONS BEFORE YOU START.

capillary with sample

capillary with sample in the Hoover apparatus

	Melting Points Video Demonstration part 1
	Melting Points Video Demonstration part 2
	Melting Points Video Demonstration part 3