Which of the following method is used to prepare acetic acid?
Correct answer: B. Fermentation
- A. Distillation
- B. Fermentation
- C. Dehydration
- D. Ozonolysis
Explanation
Production of acetic acid can be carried out by aerobic and anaerobic fermentation. The fermentation is usually initiated by yeasts which break down glucose into ethyl alcohol with the liberation of carbon dioxide gas. Following on from the yeasts, bacteria (acetobacter aceti) oxidize the alcohol to acetic acid and water. Usually, ozonolysis followed by hydrolysis of alkynes also yields in the formation of carboxylic acids but in the case of ethyne, instead of acetic acid, glyoxal is formed. Hence, the best suited option here is B.
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About Carboxylic Acids
Carboxylic acids are named and studied through the combined effects of the carbonyl and hydroxyl groups, their preparation, acidity and hydrogen bonding. Reactions include neutralisation, esterification, reduction and conversion into acid chlorides, anhydrides, esters and amides, with emphasis on how these derivatives interconvert.
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