Pre-lab Calculations

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06Feb 2022 by

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 

 

 
 
 

Solvent
 Phosphoric acid

 

98.00 
N/A 
1.685

 

 
 
 

Solvent
Sulfuric Acid

98.08
3/290
1.84

 
 
 

Solvent
Saturated Sodium Chloride

58.44
N/A
1.202
No Hazards
 
 
 

Drying Agent 
 Sodium Sulfate

 

142.04
884
2.68

 

 
 
 

Product
 

 
 
 
 
 
 
 
 
 

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?