Table of Physical Constants
Purpose | Chemical Name | Structure | MW (g/mol) | mp/bp (°C) | Density (g/mL) | Hazards |
amount (g or mL) |
Moles | Equiv |
Starting Material | 2-methylcyclohexanol |
|
114.19 |
-44.99/ 163-166 |
0.93 |
|
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Solvent | Phosphoric acid |
|
98.00 | N/A | 1.685 |
|
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Solvent | Sulfuric Acid |
|
98.08 | 3/290 | 1.84 |
|
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Solvent | Saturated Sodium Chloride |
|
58.44 | N/A | 1.202 | No Hazards | |||
Drying Agent | Sodium Sulfate |
|
142.04 | 884 | 2.68 |
|
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Product
|
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Product | |||||||||
Reagent | Potassium permanganate |
|
158.03 | N/A | 2.710 |
|
2-3 drops | ||
0.1 M bromine |
|
159.81 | N/A | 1.307 |
|
A few mL | |||
Solvent | Dichloromethane |
|
84.93 | -97.0/40.0 | 1.325 |
|
A few mL |
Calculations
Pre-lab Calculations
Moles of each reagent
2-methylcyclohexanol
Phosphoric acid
Sulfuric acid
Theoretical yield (TY) (of product)
Post-lab Calculations
- Percent Yield
- Percent composition
Prelab discussion questions:
- What mechanism will this reaction go through?
- Draw the mechanism for the acid-catalyzed dehydration of 2-methylcyclohexanol.
- How many products do you expect from this reaction?
- Which product do you predict will be the major product? Why?