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SAFETY: 1- and 2-Methylcyclohexanol are flammable and irritants.
Begin with the alcohol starting material you chose and your unique 'staring volume'
Begin with the alcohol starting material you chose and your unique 'staring volume'
Start with 1-methylcyclohexanol
(density = 0.919 g/mL)
Start with 2-methylcyclohexanol
(density = 0.93 g/mL)
Step 1. Add methylcyclohexanol
Step 1. Add methylcyclohexanol
1.1.mp4Typically, the mass of the starting alcohol added is determined by difference using the pan balance (as shown in the video)
Use your unique volume of starting alcohol (between 725-775 μL).
Calculate the theoretical mass of the alkene products using dimensional analysis. Hint – you'll need:
density of starting material (volume > mass)
molar mass of starting material (mass > mol)
molar ratio of the reaction (mol SM* > mol P)
molar mass of product (mol > mass)
Include units + chemical names! Make sure they cancel - helps ensure you're on the right track!
*SM = starting material, P = product
1-mL pluringe
1-mL pluringe
What is the volume ? (include ILE!)
pan balance
pan balance
What is the mass? (include ILE!)
Microscale apparatus
Microscale apparatus
Hickman Still (top) and the 5mL RBF (bottom). Compounds evaporate from RBF, re-condense on the walls of the still, and then drip down into the collection ring.
For comparison:
For comparison:
The condenser used for the steam distillation of citrus oil (left) vs. the microscale condenser used for the dehydration of methylcyclohexanols (right)!
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