Write the resonance structures of phenol (which is similar to that of chlorobenzene) and explain why it does not form chlorobenzene on reaction with PCI₅ Explain whether phenol can be dehydrated on heating with catalytic amounts of conc. H₂SO₄.

Solution

Resonance structures of phenol:

Due to resonance, carbon-oxygen bond develops a slight double bond character. Therefore, it is not easy to replace —OH in phenols by Cl.
No, phenols cannot be dehydrated on heating with small amount of conc. H₂SO₄. Instead, phenols with conc. H₂SO₄ undergoes sulphonation.

Some More Questions From Alcohols, Phenols and Ethers Chapter

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Alcohols, Phenols And Ethers

Write the resonance structures of phenol (which is similar to that of chlorobenzene) and explain why it does not form chlorobenzene on reaction with PCI₅ Explain whether phenol can be dehydrated on heating with catalytic amounts of conc. H₂SO₄.

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Alcohols, Phenols And Ethers

Write the resonance structures of phenol (which is similar to that of chlorobenzene) and explain why it does not form chlorobenzene on reaction with PCI5 Explain whether phenol can be dehydrated on heating with catalytic amounts of conc. H2SO4.

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Name the following compounds according to IUPAC system.

Name the following compounds according to IUPAC system.

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Show how are the following alcohols prepared by the reaction of a suitable Grignard reagent on methanal?

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Write structures of the products of the following reactions:

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Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Write the resonance structures of phenol (which is similar to that of chlorobenzene) and explain why it does not form chlorobenzene on reaction with PCI₅ Explain whether phenol can be dehydrated on heating with catalytic amounts of conc. H₂SO₄.