Post-lab (This is an INDIVIDUAL report)DiscussionConclusionCHEM 14CL Summer 2004 Experiment #9 - Distillation and GC Guidelines Pre-lab guideline Period 1: 1. Title of the experiment, date, etc. 2. Reference to procedures 3. Procedure in Flowchart Format (for the entire experiment ). Make sure you reference the procedures 4. MSDS data for toluene and ethyl acetate. Include product name, Chemical Formula, Formula weight, Melting point or Boiling point and Density (if a liquid), Spill and Disposal procedures (summarize in your own words). 5. Complete question #1 in period 1 prelab assignment on page 105. Period 2: Complete the remaining two question in the prelab assignment on page 105 Data and observations (due at the end of each lab period). Sketch and label the distillation set up in your lab notebook. Record the temperature at which the first drop of condensate forms and the temperature ranges over which each of your fractions distilled. Record the gas chromatograph instrument setting used to obtain your chromatograph Post-lab (This is an INDIVIDUAL report) . Data Analysis: Label each of your gas chromatograms as to the sample injected, the injection time and which peak corresponds to which compound. Calculate of % composition of each of your fraction from gc"s Discussion Discuss how you could have achieved a better separation in the distillation. Sketch in your notebook the chromatogram of your second fraction . Sketch how the chromatogram would have looked given the following conditions: • there had been twice as much toluene in the fraction • the gc column had been twice as long • the temperature of the column had been higher • the chart paper advance had not been turned on.Conclusion Estimate and discuss sources of error that could give rise to your calculation of the composition of the distillate
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