Frequently Asked Question

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2-propanol reacts with iodine in aqueous solution of NaOH to produce light yellow precipitate but compound Q,tertiary alcohol rndoes not. Explain the observation

Accepted Answer

The reaction of 2-propanol with iodine in aqueous NaOH is known as the iodoform reaction. This reaction only occurs with methyl ketones and primary alcohols that have at least one hydrogen atom on the carbon adjacent to the carbonyl group. Tertiary alcohols, like compound Q, do not react with iodine in aqueous NaOH because they do not have a hydrogen atom on the carbon adjacent to the hydroxyl group. This is one of the ways that methyl ketones and primary alcohols can be distinguished from tertiary alcohols.


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