CHEM14BL Spring 2003CHEM14BL Spring 2003 Report guidelines for week 1 of the aspirin experiment (Experiment 4a) Pre-lab MUST be written inside your lab notebook Pre-lab Report Guidelines (Week 1 ONLY) (i) Title of the experiment (ii) Reference of procedures (iii) Introduction (iv) Procedures for week 1 ONLY in flowchart format (v) 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) Product Name (b) Chemical Formula (c) Formula Weight (d) Melting Point; Boiling Point and Density (e) Health Hazard Data (summarize in your own words) (f) Spill and Disposal procedures (summarize in your own words) (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 Spring 2003 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 - 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 Yield (C) Conclusions - summarize results - Compare % crude yield and % corrected yield with 100%. Explain why they are different or slightly different. - What can you conclude about the % crude yield? (see below) If your % crude yield or % corrected yield is greater than 100%, explain why (Be specific) If your % crude yield or % corrected yield is less than 50%, explain why (Be
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