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The increasing order of acidic strength of phenol, p -methylphenol, m -nitrophenol and p -nitrophenol is
- a)m -nitrophenol, p -nitrophenol, phenol, p -methylphenol
- b)p -methylphenol, m -nitrophenol, phenol, p -nitrophenol
- c)p -methylphenol, phenol, m -nitrophenol, p -nitrophenol
- d)Phenol, p -methylphenol, p -nitrophenol, m -nitrophenol
Correct answer is option 'C'. Can you explain this answer?
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The increasing order of acidic strength of phenol, p -methylphenol, ...
Acidic Strength of Phenol, p-methylphenol, m-nitrophenol, and p-nitrophenol
Phenol, p-methylphenol, m-nitrophenol, and p-nitrophenol are all organic compounds with different substituents attached to the benzene ring. The acidic strength of these compounds depends on the stability of the conjugate base formed after losing a proton. Here is the increasing order of acidic strength of these compounds:
P-methylphenol
- P-methylphenol has an electron-donating methyl group attached to the benzene ring, which destabilizes the conjugate base by increasing electron density on the phenoxide ion. This makes p-methylphenol the least acidic among the given compounds.
Phenol
- Phenol has no substituents attached to the benzene ring, making it more acidic than p-methylphenol. The presence of the hydroxyl group stabilizes the phenoxide ion through resonance, increasing its acidic strength.
M-nitrophenol
- M-nitrophenol has a nitro group attached to the meta position of the benzene ring. The nitro group is an electron-withdrawing group that stabilizes the phenoxide ion through resonance, making m-nitrophenol more acidic than phenol.
P-nitrophenol
- P-nitrophenol has a nitro group attached to the para position of the benzene ring. The para position is more effective in stabilizing the phenoxide ion through resonance, making p-nitrophenol the most acidic compound among the given options.
Therefore, the increasing order of acidic strength of phenol, p-methylphenol, m-nitrophenol, and p-nitrophenol is p-methylphenol < phenol="" />< m-nitrophenol="" />< p-nitrophenol.="" />
Phenol, p-methylphenol, m-nitrophenol, and p-nitrophenol are all organic compounds with different substituents attached to the benzene ring. The acidic strength of these compounds depends on the stability of the conjugate base formed after losing a proton. Here is the increasing order of acidic strength of these compounds:
P-methylphenol
- P-methylphenol has an electron-donating methyl group attached to the benzene ring, which destabilizes the conjugate base by increasing electron density on the phenoxide ion. This makes p-methylphenol the least acidic among the given compounds.
Phenol
- Phenol has no substituents attached to the benzene ring, making it more acidic than p-methylphenol. The presence of the hydroxyl group stabilizes the phenoxide ion through resonance, increasing its acidic strength.
M-nitrophenol
- M-nitrophenol has a nitro group attached to the meta position of the benzene ring. The nitro group is an electron-withdrawing group that stabilizes the phenoxide ion through resonance, making m-nitrophenol more acidic than phenol.
P-nitrophenol
- P-nitrophenol has a nitro group attached to the para position of the benzene ring. The para position is more effective in stabilizing the phenoxide ion through resonance, making p-nitrophenol the most acidic compound among the given options.
Therefore, the increasing order of acidic strength of phenol, p-methylphenol, m-nitrophenol, and p-nitrophenol is p-methylphenol < phenol="" />< m-nitrophenol="" />< p-nitrophenol.="" />
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The increasing order of acidic strength of phenol, p -methylphenol, ...
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The increasing order of acidic strength of phenol, p -methylphenol, m -nitrophenol and p -nitrophenol isa)m -nitrophenol, p -nitrophenol, phenol, p -methylphenolb)p -methylphenol, m -nitrophenol, phenol, p -nitrophenolc)p -methylphenol, phenol, m -nitrophenol, p -nitrophenold)Phenol, p -methylphenol, p -nitrophenol, m -nitrophenolCorrect answer is option 'C'. Can you explain this answer?
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