When ethyl magnesium bromide is treated with carbon dioxide and the product hydrolyzed we get:
Correct answer: C. propionic acid
- A. formic acid
- B. oxalic acid
- C. propionic acid
- D. acetic acid
Explanation
Option C is the correct answer.When ethyl magnesium bromide (ethyl Grignard reagent) reacts with carbon dioxide (CO2) in the presence of a proton source (like water), it forms a carboxylic acid with one more carbon atom than the alkyl group. In this case, ethyl magnesium bromide reacts with CO2 to form propionic acid (CH3CH2COOH) after hydrolysis.
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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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