How are Carboxylic Acid (Putrid) And Ester (sweet) Different ?
Esters are basic
A distinct difference between carboxylic acids and esters is in their odors. Carboxylic acids are noted for their sour, disagreeable odors. On the other hand, esters have sweet pleasant odors often associated with fruits; these compounds are used in the food industry as flavoring agents. For example, while butyric acid gives rancid butter its putrid odor, the ester, ethyl butyrate, is used as the artificial flavoring agent of pineapple and be found in other flavorings.
esters are not basic. They have the formula R-C(O)-O-R and carboxylic acids are R-C(O)-OH. http://www.hartnell.cc.ca.us/faculty/shovde/chem12b/esters.htm
Are you asking for odor or for a reaction purpuse?
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