# Pre-lab Calculations

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?