lab- experiment 9

lab- experiment 9 - Miriam Khan Orgo Lab 11/18/07 Pre-lab...

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Miriam Khan Orgo Lab 11/18/07 Pre-lab assignment • Outline the following experimental procedure. • Calculate the mass and volume of 150 mmol of methylcyclohexanol. • Calculate the theoretical yield of methylcyclohexenes. • Estimate the maximum volume of alkene that should be in the distillate when the reaction is completed. Use 0.80 g/mL as the density of the alkene mixture. Procedure Measure 150 mmol of either 2-methylcyclohexanol or 4-methylcyclohexanol (as assigned by your TA) in a graduated cylinder. Tare an empty 100 mL round-bottomed flask supported in a beaker), then add the 150 mmol of methylcyclohexanol and record the weight of the liquid. Add 5 mL of 85% phosphoric acid, drop in a few boiling chips and swirl the flask to mix the reactants. Set up a fractional distillation apparatus using the reaction flask as the distilling flask. Your fractionating column should not contain any packing material. Use a 25 mL graduated cylinder as the receiver and place the cylinder in a beaker full of ice. Boil the reactants gently so that vapors ascend slowly up the column and begin to
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lab- experiment 9 - Miriam Khan Orgo Lab 11/18/07 Pre-lab...

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