CHEM 30AL Fall 2006CHEM 30AL Fall 2006CHEM 30AL Fall 2006 Report Guidelines Aspirin Experiment (part 1) The following guidelines are for week 1 of the experiment. 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) 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) 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)CHEM 30AL Fall 2006 Report Guidelines Aspirin Experiment (part 1) The following guidelines are for week 1 of the experiment. 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.CHEM 30AL Fall 2006 Postlab Report Guideline for Aspirin Experiment (Part 1) This is an INDIVIDUAL Report (A) Abstract - summarize results and outline the lab technique that you used in the lab to synthesize and/or purify the final product. (B) Data/Observations (See p.94 under the section "Synthesis") - Orderly record of data - Data tables should have proper titles/labels - Documentation of ALL observations during the experiment (C) 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
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