MHT CET · Chemistry · Alcohols Phenols and Ethers
Which among the following has the highest melting point?
- A Phenol
- B p-Nitrophenol
- C p-Cresol
- D o-Nitrophenol
Answer & Solution
Correct Answer
(B) p-Nitrophenol
Step-by-step Solution
Detailed explanation
Due to intramolecular hydrogen bonding in ortho-isomer, the molecule remains in isolated state and it has a lower melting point.
In p-Cresol, non polar \(-\mathrm{CH}_3\) group is present which does not participate in H -bonding. Due to effective intermolecular hydrogen bonding para-isomer remains in associated state and so p -nitrophenol has highest melting point.
In p-Cresol, non polar \(-\mathrm{CH}_3\) group is present which does not participate in H -bonding. Due to effective intermolecular hydrogen bonding para-isomer remains in associated state and so p -nitrophenol has highest melting point.
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