All of the following methods are used to prepare carboxylic acids EXCEPT:
Correct answer: D. By the reduction of aldehydes
- A. By the oxidation of alcohol
- B. By acid hydrolysis of alkane nitrite
- C. By the reaction R-Mg-Br with CO2 followed by acid hydrolysis
- D. By the reduction of aldehydes
Explanation
Option D is correct.Aldehydes can be reduced not to carboxylic acids by using a strong reducing agent, such as hydrogen gas and a metal catalyst, such as platinum or palladium. The reduction reaction is shown below:R-CHO + H2 -> R-COOH
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