ORGANIClab4 - Experiment No.: 8 Name: Paul Gonzales...

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Experiment No.: Experiment Name: Date: 8 Simple Distillation 07/02/10 Name: Course: Paul Gonzales CH 2123 1
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Purpose: the purpose is to identify a petroleum hydrocarbon using boiling point and refractive index. Physical Data: Bp Den@20C Cyclohexane 81 .729 Cyclopentane 49 .746 Ethyl Acetate 77 .900 Hexane 69 .659 Heptane 98 .684 Calculations: Mass of glass: 59.1 g Glass with hydrocarbon: 71.74 g Glass w/ hydr. – mass of glass = total mass of hydrocarbon 71.74 – 59.1 = 12.61 Total mass of hydrocarbon: 12.61 16 mL = total volume Vial: 15.26 g Vial w/ 1 mL hydrocarbon = 15.97 15.97-15.26 = .71 Density of hydrocarbon = .71 g/mL Temp after a few drops: 48 C Temp after 10 mL: 49 C Temp after 20 mL: 51 C Final Temp: 54 C Procedure: 1.Obtain a 20 mL sample of the unknown hydrocarbon. Record its identification number and the ambient barometric pressure in your laboratory notebook. Select a suitable heat source and assemble an apparatus desrbed in OP30. Make sure that the thermometer bulb is positioned correctly in the still head. Distill the liquid slowly, setting aside a low
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ORGANIClab4 - Experiment No.: 8 Name: Paul Gonzales...

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