ONK COMMUNITY COLLEGE/ CUNY Department of Chemistry&Chemical; Technology DATL: 4

Question

ONK COMMUNITY COLLEGE/ CUNY Department of Chemistry&Chemical; Technology DATL: 414/1 1. What organic compound is largely responsible for the flavors and fragrances of ripe fruits? 2. Name and draw 3 monocarboxylic acids and 3 dicarbonylic acids 3. Explain the weak acidity of carboxylic acids uning a chemical reaction 4. Which of the following substances would react with a carboxylic acid to produce carbonylic acid salt? a. A strong acld b. A strong base c. A soluble aldehyde d. No correct response The IUPAC name for the propionic acid salt a. Propyl sodiumate b. Propanoic sodiumate c. Sodium propanoate d. No correct response 5. 6. Draw a lactone. 7. Which of the following is an ester of salicylic acid? b. Benzocaine c. Aspirin d. No correct response 8. Name and write the formula of the most important naturally occurring thioester 9. Use a chemical reaction to prepare a polyester

Explanation / Answer

Answer 1. Esters

Esters are comounds which are formed by the reaction of an acid and an alcohol and are mainly responsible for the fruity smell.

Both , Naturally or artificially esters are responsible for the fruity smell and taste.

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