Why is phenol more acidic than propanol?

Phenoxide ion is stabilized through delocalisation. Phenoxide ion is aromatic and can undergo resonance but ethoxide ion can’t. Complete step-by-step solution – Phenol is more acidic than that of ethanol because phenoxide ion is stabilized through delocalisation.

Why phenol is a stronger acid?

Acidity of Phenols Phenol is more acidic than cyclohexanol and acyclic alcohols because the phenoxide ion is more stable than the alkoxide ion. In an alkoxide ion, such as the one derived from cyclohexanol, the negative charge is localized at the oxygen atom.

What makes phenol more acidic than ethanol?

Hint: Phenol loses its hydrogen ion to form the phenoxide ion which resonates and stabilizes itself and this loss of electrons makes the phenol more acidic than alcohol for example ethanol.

Which of the following phenol is more acidic?

Hence, p-nitro phenol is most acidic among the given.

Is phenol more acidic than acetic acid?

Answer: Acetic acid is more acidic than Phenol. Acetic acid is a typical carboxylic acid and removal of proton from O-H bond is facilitated by electron withdrawing carbonyl group. But Phenol is stabilised by phenoxide ion via resonance and no such property as acetic acid is not observed yet.

Why phenols are more acidic than alcohols give two reactions to show that phenols are acidic in nature?

The acidic nature of phenol can be represented by the following two reactions: (i) Phenol reacts with sodium to give sodium phenoxide, liberating H2. (ii) Phenol reacts with sodium hydroxide to give sodium phenoxide and water as by-products. The acidity of phenol is more than that of ethanol.

Which of the phenol is most acidic?

p-nitro phenol
Hence, p-nitro phenol is most acidic among the given.

Why is phenol more acidic than aliphatic alcohols?

In phenoxide ion the negative charge is delocalized within the ring structure which makes it more stable than the aliphatic alcohols. In aliphatic alcohols there is no such delocalization stabilization. Therefore, phenols are more acidic and the resulting phenoxide ion is stabilized because of resonance.

Why are ortho and para Nitrophenols more acidic than phenol?

The presence of this group in the ortho or para position decreases the electron density in the O? H bond. As a result, it is easier to lose a proton. Hence, ortho and para nitrophenols are stronger acids than phenol.

Which is more acidic phenol or ethanol?

Both phenol and ethanol weak acid. However, the acidity of phenol is more than that of ethanol. This is because after losing a proton, the phenoxide ion undergoes resonance & gets stabilized whereas ethoxide ion does not.

Why does phenol ionize in water but not alcohol?

The electron-donating inductive effect (+I effect) of the alkyl group destabilizes the alkoxide ion (the conjugate base of alcohol). As a result, alcohol does not ionize much in the water, and behaves like a neutral compound in an aqueous medium. ii. Ionization of phenol is represented by the following equilibrium

Why is phenol stable in benzene?

Phenol is stable through conjugation of lone pair of oxygen with the benzene ring. Hence a positive charge develops on the oxygen atom which increases the polarity of O – H bond. So phenol becomes more prone to donate proton (H+). 2. Upon giving proton (H+) phenol forms phenoxide ion as a conjugate base.

Why does phenol show a weak acidic character in aqueous medium?

Phenoxide ion, the conjugate base of phenol, is resonance stabilized by delocalization of the negative charge. Therefore, phenol ionizes in an aqueous medium to a moderate extent and thereby shows a weak acidic character. Is there an error in this question or solution?