Distillation GC Winter 2016 Report

Distillation GC Winter 2016 Report - CHEM 14CL WINTER 2016...

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CHEM 14CL WINTER 2016 Distillation and Gas Chromatography (GC) Guidelines Pre-lab report is due at the beginning of the lab section. Pre-lab report MUST be written inside your lab notebook. There is only ONE PRE-LAB REPORT FOR THIS EXPERIMENT. You will start and finish this experiment on Tuesday & Wednesday 3/1 & 2 and GROUP work & report. 1. Introduction for the ENTIRE experiment (i.e. both the distillation and gas chromatography) 2. Procedure in Flowchart Format ( for the entire experiment ). Make sure you reference the procedures. Please note the following changes. CHANGE IN PROCEDURE: • Instead of toluene/ethyl acetate mixture, you will be provided with an UNKNOWN mixture. Possible components of your unknown are ethyl acetate; 2-butanone; n -propyl acetate; and 2-pentanone. Use 15mL of this unknown mixture for your distillation. You will also collect the fractions at the following temperatures instead of the ones listed in the manual: Fraction #1 between 55 – 65 c C.; fraction #2 between 65 – 75 c C.; fraction #3 between 75 – 85 c C and fraction #4 between 85 – 100 c C. You will also adjust the Power Mite setting to 45 during the experiment. Power Mite is the knob that controls the heating rate of the heating mantle.
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