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Liebermann's test is used for which clas...

Liebermann's test is used for which class of compounds -

A

Alcohols

B

Phenols

C

Aldehydes

D

Ketones

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Identify the Test**: The question asks about Liebermann's test. We need to determine which class of compounds this test is used for. 2. **Understanding Liebermann's Test**: Liebermann's test is a chemical test used to identify the presence of phenolic compounds. 3. **Reaction Overview**: In this test, phenol (C6H5OH) is treated with sodium nitrite (NaNO2) in the presence of dilute sulfuric acid (H2SO4). 4. **Formation of the Intermediate**: The reaction leads to the formation of a nitroso compound (C6H4(OH)(NO)) where the nitroso group (NO) is introduced into the phenolic structure. 5. **Color Change**: The resulting compound exhibits a distinct color change. The formation of a green-colored compound indicates the presence of phenol. 6. **Further Reaction**: When this compound is treated with sulfuric acid, it undergoes further reactions that stabilize the structure, leading to the formation of a blue-colored compound. 7. **Conclusion**: The blue compound formed confirms the presence of phenolic compounds, thus establishing that Liebermann's test is specifically used for phenols. **Final Answer**: Liebermann's test is used for phenolic compounds. ---
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