143A Exprmnt 5ab Pre-lab

143A Exprmnt 5ab Pre-lab - Name: _ Date: _02-9-2011_ TA...

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Name: __________________ Date: __02-9-2011 __ TA signature: _________________________ Experiment #: __5_ _________ Chemicals to be Used Today: Unknown - n-Hexane - Cyclohexane - n-Heptane - n-Octane Water Equipment to be Used Today: boiling chips 100 mL round bottom flask sand bath thermometer stand clamps distillation still head hoses condenser bent adapter graduated cylinder vial fractional distillation column copper mesh glass wool (Irratant, handle in the hood with gloves fume hood GC Procedure: Part A: Simple Distillation 1. Add 50 mL of your mixture (1:1 by volume) and one or two boiling chips to a 100 mL round bottom flask. 2. Position the flask in a cool sand bath and clamp the flask securely. Place a thermometer in the sand. Connect the distillation still head to the flask. 3. Connect two hoses to a water-cooled condenser, with water entry into the lower tap and water exit out the upper tap of the condenser. Start a gentle stream of water. 4.
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143A Exprmnt 5ab Pre-lab - Name: _ Date: _02-9-2011_ TA...

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