When aldehyde reacts with 2,4- DNP and Tollen's agents , Positive result in seen. Which compound also gives same results?
- Ketone
- Alcohol
- Ester
- Acid
Explanation
Based on the reactions, the compound that also gives a positive result with both 2,4-DNP and Tollen's agents is Ketone
2,4-Dinitrophenylhydrazine (2,4-DNP) test:
This test is used to detect the presence of a carbonyl group (C=O).
Both aldehydes and ketones have a carbonyl group, so both will give a positive result, forming a yellow, orange, or red precipitate
Tollen's test:
This test is used to differentiate between aldehydes and ketones.
Aldehydes:
Give a positive result with Tollen's agent because they are easily oxidized to form a carboxylic acid.
In this process, the silver ions (Ag^+) in the Tollen's reagent are reduced to metallic silver (Ag(s)), which forms a characteristic "silver mirror" on the inside of the test tube.
Ketones:
Generally do not give a positive Tollen's test because they cannot be easily oxidized.
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