Pre-lab Calculations

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
2-methylcyclohexanol.png

 

 114.19 

-44.99/

163-166 

 0.93 
Irritant.PNG

 

      
Solvent  Phosphoric acid
phosphoric acid.png

 

 98.00  N/A  1.685
Skin or eye corrosive.PNG

 

      
Solvent Sulfuric Acid
98.08 3/290 1.84
     
Solvent Saturated Sodium Chloride
sodium chloride solution .png
 58.44 N/A 1.202 No Hazards      
Drying Agent   Sodium Sulfate
sodium sulfate.png

 

 142.04 884 2.68
Irritant.PNG

 

      

Product

 

                  
Product                   
Reagent Potassium permanganate
potassium permagnate.png
 158.03 N/A 2.710
Irritant.PNG
Skin or eye corrosive.PNG
Oxidizer.PNG
aquatic toxicity.PNG
 2-3 drops     
  0.1 M bromine
bromine.png
 159.81 N/A 1.307
CMR.STOT Hazard if swallowed.PNG
Toxic.PNG
aquatic toxicity.PNG
Skin or eye corrosive.PNG
 A few mL    
Solvent Dichloromethane
dichloromethane.png

 

  84.93 -97.0/40.0 1.325  
CMR.STOT Hazard if swallowed.PNG

 

Irritant.PNG
 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:

  1. What mechanism will this reaction go through?
  2. Draw the mechanism for the acid-catalyzed dehydration of 2-methylcyclohexanol.
  3. How many products do you expect from this reaction?
  4. Which product do you predict will be the major product? Why?