Why is phenol more acidic than methoxyphenol?

In phenol, -OH group acts as a electron donating group and the phenoxide ion so formed is stabilized by resonance. Similar for methoxyphenol, both methoxy and -OH group is electron donating. Thus the no. of resonating structures of the conjugate base in this case is greater and thus it is more acidic.

Is methoxyphenol more acidic than phenol?

Consider the acidity of 4-methoxyphenol, compared to phenol. Notice that the methoxy group increases the pKa of the phenol group – it makes it less acidic.

Which is more acidic P Methoxyphenol or P methyl phenol?

Methoxy group has electron withdrawing effect while Methyl group has electron donating effect . So p-methoxy phenol is more acidic than p-methyl phenol.

Is phenol less acidic than O nitrophenol?

Presence of these groups at ortho or para positions of phenol decreases the acidic strength of phenols. So, phenol is less acidic than o – nitrophenol.

Is phenol less acidic than acetic acid?

Here in acetic acid if we draw resonating structure then same negative charge resides on oxygen atom but if we draw the resonating structure of phenol the negative charge move on from oxygen to carbon and it becomes a non equivalent structure. Hence acetic acid is more acidic than phenol.

Which one of the following is more acidic * benzyl alcohol cyclohexanol phenol o chlorophenol?

Which of the following is most acidic? (a) Benzyl alcohol (b) Cyclohexanol (c) Phenol (d) w-Chlorophenol. Answer: (d) Alcohols are less acidic than phenol. Further, electron-withdrawing groups increase the acidity of phenols, therefore, m-chlorophenol is the most acidic.

Why is methylphenol less acidic than phenol?

Now , in para methyl phenoxide ion due to +I effect of methyl group , the density of electron on oxygen ion increases . So the stability of para methyl phenoxide ion is decrease than phenoxide ion . Consequently, para methyl phenol is less acidic than phenol .

Is more acidic than P-methylphenol?

P-Nitrophenol is more acidic than p-methyphenol because P-Nitrophenol has electron with drawing group.

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 phenol is weakly acidic than acetic acid?

Why is acetic acid more stable than phenol?

the simple reason is that among acetic acid and phenol acetic acid is stronger than phenol because acetic acid is resonance stabalised whereas phenol is not . and there is also double bond character in acetic acid whereas in phenol its not.

Why is para methyl phenol less acidic than phenol?

Now , in para methyl phenoxide ion due to +I effect of methyl group , the density of electron on oxygen ion increases . So the stability of para methyl phenoxide ion is decrease than phenoxide ion . Consequently, para methyl phenol is less acidic than phenol .

What is the pKa of p-methoxy phenol?

Since the unionized form in p-methoxy phenol is more stable rather than the ionized form in p-methoxy phenol, the dissociation equilibrium shifts to the left making p-methoxy phenol less acidic. This is also reflected in the pKa values. pKa of methyl phenol = 10.26. pKa of methoxy phenol = 10.4.

Why is P-methylphenol more acidic than P-methoxyphenol?

In case of p-methylphenol, it also destabilises phenoxide ion due to its +I effect, but not a p-methylphenol is more acidic compared to p-methoxyphenol. The stability of negative ion formed after liberation of H+ ion decides acidity of an acid. More stable the negative ion, more acidic is the compound.

What is the resonance effect of 2-methoxy phenol?

The o-position (2-methoxy phenol) is a little unique. The resonance effect is identical with the p-position (decrease acidity) but the inductive effect (which falls off with distance) is quite strong and may override the resonance effect. What are the numbers. phenol – pKa is 10.