preparation of adipic acid from cyclohexene
(1 pts) POST LAB QUESTIONS: 1. Why do we add methanol to the reaction if we see a purple ring? S. TA signature 2. What reaction is occurring with the methanol (show reaction)? Does this reaction affect your product? hy do you get a precipitate when adding the HCl to make the solution acidic?
preparation of adipic acid from cyclohexene
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Related questions
1. Bobby Drake is setting up his reaction and seals the top of his reflux condenser, creating a sealed system, and begins to heat the reaction. Explain the safety issues with Bobbyâs reaction. (10 pts)
2. Methanol is a byproduct of the reaction in this lab. According to Sigma Aldrichâs SDS sheet, what type of gloves should be worn when handling methanol? (10 pts)
3. Scott Summers has obtained an IR spectrum for his product however he must leave to Genosha. Assign the following stretches in the table below for the product. (10 pts)
Figure1: Chemical structure of acetanilide
IR Stretching Frequency (cm-1) | Functional Group/Bond |
3057 | |
1662 |
4. After 10 minutes of drying Warren Worthington notices a severe melting point depression for his benzoic acid sample (80-100 °C) though he should have distilled off all the methanol. He calculates a 115% yield. Offer a reasonable explanation for the observed melting point depression, and unreasonable percent yield. What would you advise Warren to do in order to obtain reasonable data? (20 pts).
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7. In principle it is possible to synthesize methyl benzoate again from the benzoic acid obtained in lab at 100% yield. To do this reaction NaOH and methanol can be used once again, however in order to obtain 100% yield water cannot be present during the reaction. Explain this using the equilibrium expression below. (Hint: It will be helpful to review Le Chatlierâs principle, and use this in your explanation) (25 pts)
Scheme1: Equilbrium of the fisher esterification of benzoic acid to form methyl benzoate.
8. Alex Summers accidentally breaks the container of hydrochloric acid in his fume hood. What are the proper safety protocols that he should follow? (10 pts)