Is phenol more acidic than O nitrophenol?
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Is phenol more acidic than O nitrophenol?
The phenols, when they lose a proton, form the phenoxide ion. The negative charge present on the phenoxide ion will undergo resonance and is therefore very stable.
Why is phenol less acidic than O nitrophenol?
Phenoxide is stabilised by resonance effect only and it does not have any electron releasing group. So, it is more acidic than O-methyl phenol and O-methoxy phenol. But the absence of an electron-withdrawing group makes it less acidic than O-nitrophenol.
Why phenol is most acidic?
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. Phenols substituted with electron-donating groups are less acidic than phenol.
Why phenol is acidic and its nitro derivatives is more acidic than phenol?
Nitro group of phenol produces -I and -R effect. So, the electron density in the O-H bond of p-nitrophenol decreases relative to the O-H bond of phenol. The decrease in electron density of the O-H bond of p-nitrophenol, the polarity of O-H bond is decreases and in turn make it more acidic than phenol.
Why is phenol less acidic?
Phenol is a very weak acid and the position of equilibrium lies well to the left. Phenol can lose a hydrogen ion because the phenoxide ion formed is stabilised to some extent. The negative charge on the oxygen atom is delocalised around the ring. That is why phenol is only a very weak acid.
Is phenol less acidic than?
Phenols are compounds in which a hydroxyl group is bonded directly to an sp2 hybridized carbon atom of an aromatic ring. It is more acidic than an alcohol, but less acidic than a carboxylic acid.
Why are phenols more acidic than alcohols explain?
Phenols are much more acidic than alcohols because the negative charge in the phenoxide ion is not localized on the oxygen atom, as it is in an alkoxide ion, but is delocalized-it is shared by a number of carbon atoms in the benzene ring.
Which of the following phenols is more acidic?
Picric acid
Picric acid is the strongest acid due to the presence of thee (NO2 group (-R and -I effect).