CHEM14BL Winter 2005 Report Guidelines for Week 1 of the Aspirin Experiment Experiment 4a Pre lab report MUST be written inside your lab notebook I On line Technique Videos For This Experiment Click on the title below to download the video require Real Player 1 Laboratory Safety this video was shown on the first day of the lab 2 Recrystallization If you have trouble downloading the videos go to the following Web site and click on the appropriate title to download the video http oid ucla edu Webcast Chemistry Guides for Writing Lab Reports II Pre lab Report Guidelines Week 1 ONLY i ii iii iv v Title of the experiment Reference of procedures Introduction Procedures for week 1 ONLY in flowchart format MSDS information The following chemicals will require you to use the MSDS database on the Web see Lecture Syllabus the MSDS handout Salicylic Acid Reagent Grade Sulfuric acid Concentrated Acetic anhydride Reagent Grade Note In MSDS select the site that gives you the MSDS information closest to the concentration or grade listed above for each individual chemical You should record the following MSDS information in your notebook for the chemicals listed above Printouts directly from the Web pages will NOT be accepted a b c d e f Product Name Chemical Formula Formula Weight Melting Point Boiling Point and Density Health Hazard Data summarize in your own words Spill and Disposal procedures summarize in your own words CHEM14BL Winter 2005 Report guidelines for week 1 of the aspirin experiment Experiment 4a Pre lab report MUST be written inside your lab notebook II Pre lab Report Guidelines Week 1 ONLY Continued vi Prelab study questions Must show all work for FULL credit Complete ALL study problems under week 1 vii Data observations Start a NEW page Set up tables but leave blank You MUST record all the observations into your lab notebook during your lab sessions You will NOT receive any credit for your lab technique if you only record the weight of the chemicals for this experiment CHEM14BL Winter 2005 Postlab Report Guideline for Aspirin Experiment Part 1 This is an INDIVIDUAL Report A Data Synthesis See the bottom of p 58 in your lab manual Orderly record of data observations Data tables should have proper titles labels B Data Analysis MUST SHOW ALL WORK FOR FULL CREDIT Theoretical moles of Aspirin MUST identify which one is the limiting reagent Crude Yield Corrected Crude Yield refer to the lab manual for equation C Conclusions Summarize results Compare crude yield and corrected crude yield Explain why they are different or slightly different What can you conclude about the crude yield especially if your crude yield is greater than 100 or less than 50
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