Arrange the following compounds according to decreasing boiling points.
(I) (II) (III) (IV)
III 
II 
I
IV 
II 
I
II 
III 
IV
II 
I 
IV
Text Solution
Verified by ExpertsA
The given compounds are phenol and its derivatives (also known as isomeric dihydroxy
benzenes).
As the distance between the -OH group increases, the repulsion between them decreases. In case of quinol intermolecular H -bonding takes place while in case of catechol intra molecular H-bonding takes place. Intermolecular H -bonding are more stronger. So, Boiling point of quinol is higher than catechol.
Therefore, decreasing order of boiling point is;
The name of the given compounds with their boiling point is -
I - Phenol ( 
)
II - Catechol 
III - Resorcinol ( 
).
IV - Quinol ( 
)
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