Alcohols acts as weak bases. Explain.

Alcohols acts as weak bases. Explain.
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1 Answer

Answer :

The oxygen atom of the hydroxyl group has two lone pairs of electrons. Therefore alcohols accept a proton from strong mineral acid to form oxonium ions. Hence act as weak bases.
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Phenols do not undergo substitution of the — OH group like alcohols. Explain.

Description : Phenols do not undergo substitution of the — OH group like alcohols. Explain.

Last Answer : The C — O bond in phenols has some double bond character due to resonance and hence cannot be easily cleaved by a nucleophile. In contrast, the C — O bond in alcohols is a pure single bond and hence can be easily cleaved by a nucleo phile.

Why is it that secondary alcohols can only undergo a single oxidation step in contrast to primary alcohols?

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Last Answer : Ans. In phenols lone pair of electrons on the oxygen atom are delocalised over the benzene ring due to resonance and hence are not easily available for protonation. In contrast in alcohols, ... oxygen atom are localized due to absence of resonance and hence are easily available for protonation. 

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Ethers are cleaved by acids not by based. Why ?

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How an — OH group attached to carbon in the benzene ring activates benzene towards electrophilic substitution ?

Description : How an — OH group attached to carbon in the benzene ring activates benzene towards electrophilic substitution ?

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Description : Name the products obtained when anisole is treated with HI.

Last Answer : Ans. Phenol and methyl iodide. 

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Why are amines always less acidic than comparable alcohols?

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