Which is more acidic p-chlorophenol or p-Fluorophenol?
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Which is more acidic p-chlorophenol or p-Fluorophenol?
This is because of the negative charge delocalizing on the vacant d-orbitals of chlorine atom present in the para position and this is not possible with fluorine atom. Thus, the conjugate base of p-chloro phenol is more stable and hence a weak base. So, p-chloro phenol is more acidic than p-fluoro phenol.
Why is Fluorophenol weakest acid?
Amongst o-halophenols,o-Flurophenol is the weakest acid due to strong intramolecular H-bonding. The acidity of other halophenols decreases as the -Ieffect of the halogen decreases.
Which is more acidic and why p-chlorophenol or p nitrophenol?
p-chlorophenol or p-nitrophenol? Both the chlorine and the nitro group at the para position makes the phenol group acidic because they are both electron withdrawing groups that stabilize the negative charge of phenol. Thus, p-nitrophenol is more acidic than p-chlorophenol.
Is fluorophenol more acidic than phenol?
As it turns out, the dissociation constants are 8.7, 9.3. 9.9 and 10.0 for ortho, meta, para and unsubstituted phenol. Ortho-fluorophenol is the most acidic – perhaps in spite of the possible hydrogen bonding.
Why o fluorophenol is weakest acid than P or M?
O-fluorophenol is more acidic than p-fluorophenol. This is because fluorine is more electronegative than oxygen and when both the conjugate bases are formed the negative charge on oxygen is more stabilised by ortho fluorine than by para fluorine due to lesser distance and hence greater inductive effect.
Which of the following is least acidic fluorophenol chlorophenol?
In the case of o-halophenols, or 2-halophenols, 2-fluorophenol is the least acidic because of intramolecular H-bonding between F group and H from the OH group, which is strongest because of higher electronegativity of fluorine.