Download Report Guideline for Assignment 4 - The Synthesis of Aspirin | CHEM 14BL and more Assignments Chemistry in PDF only on Docsity! Chem 14BL Fall 2002 Report Guideline for Assignment 4 The Synthesis of Aspirin QUIZ (WEEKS 1 AND 2) Only one quiz will be given covering both parts of this assignment. It will be given at the beginning of lab during the second period of the assignment on 11/21 – 11/27. WEEK 1 - SYNTHESIS PRE-LAB WORK (INDIVIDUAL) Introduction In preparing for lab set up your notebook with the following information: • The title of the experiment • A reference (i.e. complete reference of the experiment including title of the lab manual, author, edition and page number of the experiment in the manual etc.) Include any changes to the procedure that you know you will make. • A short introduction (Summarize in a two or three sentences the goals of the experiment. Outline the kinds of techniques that you will use in the experiment) • A brief flow chart summary of the key procedures of the experiment • MSDS information for Salicylic acid (Reagent Grade), Sulfuric acid (Concentrated), and Acetic anhydride (Reagent Grade) Note: Select the site that gives you the MSDS information closest to the concentration or grade listed above for each individual chemical.) For each compound give: 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) IN-LAB WORK Data: (Individual) • In tabular form note the weights and volumes of the reagents that you use, AND all observations during the synthesis.. POST-LAB NOTEBOOK REPORT (DUE NOV 21-27) Data Analysis • Calculate the theoretical moles of aspirin (Be sure to identify the limiting reagent in your procedure) • Calculate the % crude yield • Calculate of the % corrected yield Conclusions • Summarize your results • Compare the % crude yield and the % corrected yield with 100%. Explain why they are different or slightly different. • What can you conclude about the % crude yield? That is, if your % crude yield or % corrected yield is greater than 100%, explain why or if your % crude yield or % corrected yield is less than 50%, explain why (be specific). Week 2 - Analyses by Titration and Melting Point
