CBSE Class 12 Chemistry 2023 Delhi Set 1 Solved Paper

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Question : 23
Total: 35
For the pair phenol and cyclohexanol, answer the following
(a) Why is phenol more acidic than cyclohexanol ?
(b) Give one chemical test to distinguish between the two.
(a) Cyclohexanol is less acidic as compared to phenol because phenol is an aromatic compound while cyclohexanol is cyclic ring structure containing hydroxyl ion (-OH group).
In phenol benzene ring is having double bond and shows sp2 hybridization. Because of more s-character it is more acidic.
(b) When phenol react with Ferric Chloride, it gives violet colour but cyclohexanol remains colourless when react with FeCl3.
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