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Mathew Mahindaratne
Mathew Mahindaratne
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In both orthoortho- and parapara-nitrophenol, there is one more resonance structure. So due to resonance effects both orthoortho- and parapara-nitrophenol are more acidic than the metameta-nitrophenol.

Now we compare the acidity of orthoortho- and parapara-nitrophenol. In orthoortho-nitrophenol, interamolecular H-bonding takes place because of attachment with adjacent carbon atom. But in parapara-nitrophenol, there is no interamolecular H-bonding taking place. So that's why parapara-nitrophenol is more acidic than orthoortho-nitrophenol. So, by increasing order of acidity,

parapara-nitrophenol > ortho$\gt$ ortho-nitrophenol > meta$\gt$ meta-nitrophenol.

In both ortho- and para-nitrophenol there is one more resonance structure. So due to resonance effects both ortho- and para-nitrophenol are more acidic than the meta-nitrophenol.

Now we compare the acidity of ortho and para-nitrophenol. In ortho-nitrophenol, interamolecular H-bonding takes place because of attachment with adjacent carbon atom. But in para-nitrophenol there is no interamolecular H-bonding taking place. So that's why para-nitrophenol is more acidic than ortho-nitrophenol. So, by increasing order of acidity,

para-nitrophenol > ortho-nitrophenol > meta-nitrophenol.

In both ortho- and para-nitrophenol, there is one more resonance structure. So due to resonance effects both ortho- and para-nitrophenol are more acidic than the meta-nitrophenol.

Now we compare the acidity of ortho- and para-nitrophenol. In ortho-nitrophenol, interamolecular H-bonding takes place because of attachment with adjacent carbon atom. But in para-nitrophenol, there is no interamolecular H-bonding taking place. So that's why para-nitrophenol is more acidic than ortho-nitrophenol. So, by increasing order of acidity,

para-nitrophenol $\gt$ ortho-nitrophenol $\gt$ meta-nitrophenol.

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pentavalentcarbon
pentavalentcarbon
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In both Orthoortho- and Pera Nitro Phenolpara-nitrophenol there areis one More resonating Structuremore resonance structure. So due to resonance effecteffects both ortho- and Pera Nitro Phenolpara-nitrophenol are more acidic than the Meta Nitro phenol meta-nitrophenol. Now

Now we Compare Aciditycompare the acidity of Orthoortho and Pera Nitro phenol ..para-nitrophenol.In Ortho Nitro Phenol In ortho-nitrophenol,Interamolecular interamolecular H-bonding Taketakes place Becausebecause of attachment with adjacent carbon atom.But In Pera Nitro phenol But in para-nitrophenol there is no Interamolecularinteramolecular H  - bonding takebonding taking place ...So So that's why Pera Nitro Phenolpara-nitrophenol is more Acidic Than Ortho Nitro phenol acidic than ortho-nitrophenol.So So, by increasing Orderorder of Acidity Pera Nitro Phenolacidity,

para-nitrophenol > Ortho nitro phenolortho-nitrophenol > Meta nitro phenol meta-nitrophenol.

In both Ortho and Pera Nitro Phenol there are one More resonating Structure. So due to resonance effect both ortho and Pera Nitro Phenol are more acidic than the Meta Nitro phenol . Now we Compare Acidity of Ortho and Pera Nitro phenol ...In Ortho Nitro Phenol ,Interamolecular H-bonding Take place Because of attachment with adjacent carbon atom.But In Pera Nitro phenol there is no Interamolecular H  - bonding take place ...So that's why Pera Nitro Phenol is more Acidic Than Ortho Nitro phenol .So increasing Order of Acidity Pera Nitro Phenol > Ortho nitro phenol > Meta nitro phenol .

In both ortho- and para-nitrophenol there is one more resonance structure. So due to resonance effects both ortho- and para-nitrophenol are more acidic than the meta-nitrophenol.

Now we compare the acidity of ortho and para-nitrophenol. In ortho-nitrophenol, interamolecular H-bonding takes place because of attachment with adjacent carbon atom. But in para-nitrophenol there is no interamolecular H-bonding taking place. So that's why para-nitrophenol is more acidic than ortho-nitrophenol. So, by increasing order of acidity,

para-nitrophenol > ortho-nitrophenol > meta-nitrophenol.

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Ankit
Ankit
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In both Ortho and Pera Nitro Phenol there are one More resonating Structure. So due to resonance effect both ortho and Pera Nitro Phenol are more acidic than the Meta Nitro phenol . Now we Compare Acidity of Ortho and Pera Nitro phenol ...In Ortho Nitro Phenol ,Interamolecular H-bonding Take place Because of attachment with adjacent carbon atom.But In Pera Nitro phenol there is no Interamolecular H - bonding take place ...So that's why Pera Nitro Phenol is more Acidic Than Ortho Nitro phenol .So increasing Order of Acidity Pera Nitro Phenol > Ortho nitro phenol > Meta nitro phenol .