Which is more acidic phenol or alcohol?
Date created: Thu, May 13, 2021 3:55 PM
Date created: Fri, May 14, 2021 1:00 AM
A typical alcohol has a pKa of 16–17. In contrast, phenol is 10 million times more acidic: its pKa is 10. Phenol is more acidic than cyclohexanol and acyclic alcohols because the phenoxide ion is more stable than the alkoxide ion. Poly Phosphoric acid is an example of Industrial Chemical.
Date created: Fri, May 14, 2021 9:41 PM
Phenols are more acidic than alcohols. Explain why? Answer: Phenols react with aqueous sodium hydroxide to produce phenoxide ions. This indicates that the acidity of phenols is higher in comparison to the alcohols. The phenoxide ion is stabilized by the delocalization of negative charge due to the resonance in the benzene ring.
Date created: Sun, May 16, 2021 1:48 PM
Acidity of Substituted Phenols Substitution of the hydroxyl hydrogen atom is even more facile with phenols, which are roughly a million times more acidic than equivalent alcohols. This phenolic acidity is further enhanced by electron-withdrawing substituents ortho and para to the hydroxyl group, as displayed in the following diagram.
Date created: Mon, May 17, 2021 8:18 PM
Answer. Phenol is more acidic than alcohols due to stabilisation of phenoxide ion through resonance. Presence of electron withdrawing group increases the acidity of phenol by , stabilising phenoxide ion while presence of electron releasing group decreases the acidity of phenol by destabilising phenoxide ion. Answer verified by Toppr.
Date created: Tue, May 18, 2021 8:04 PM
Phenol is more acidic than ethanol because in phenol lone pair of electrons are utilized in resonance stabilization so bond length between O and H atom increases and H X + ion is easily released. While in case of alcohol no resonance stabilization takes place so no release of H X + ion.
Date created: Wed, May 19, 2021 1:50 AM
The difference in the acidic character of phenols and alcohol is due to the difference in reactivity of these compounds towards the ionization of the O–H bond. This can be explained as follows: i. Ionization of alcohols is represented by the following equilibrium
Date created: Wed, May 19, 2021 2:30 AM
Alcohols are so weakly acidic that, for normal lab purposes, their acidity can be virtually ignored. However, phenol is sufficiently acidic for it to have recognizably acidic properties - even if it is still a very weak acid. A hydrogen ion can break away from the -OH group and transfer to a base.
Date created: Wed, May 19, 2021 6:10 PM
why is carboxylic acid more acidic than phenol? Ka value of carboxylic acid is higher than phenol. Due to close oxygen atoms hydrogen atom in the -OH group is highly positively charged than -OH group in the phenol. why are alchols weaker acids than cooh? Alcohols form alkoxide anion in the water. Carboxylic acids (-COOH) form carboxylate anions.
Date created: Thu, May 20, 2021 9:49 AM
the O – Hbond of aliphatic alcoholis more stronger than phenol and hence the tendency to release proton is very much less.
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