WBJEE · Chemistry · Hydrocarbons
The exact order of boiling points of the compounds \(\mathrm{n}\)-pentane, isopentane, butanone and 1 -butanol is
- A n-pentane \( < \) isopentane \( < \) butanone \( < 1\)-butanol
- B isopentane \( < \mathrm{n}\)-pentane \( < \) butanone \( < 1\)-butanol
- C butanone \( < \mathrm{n}\)-pentane \( < \) isopentane \( < 1\)-butanol
- D 1-butanol \( < \) butanone \( < \mathrm{n}\)-pentane \( < \) isopentane
Answer & Solution
Correct Answer
(B) isopentane \( < \mathrm{n}\)-pentane \( < \) butanone \( < 1\)-butanol
Step-by-step Solution
Detailed explanation
As intermolecular force varies as: H bonding > dipole dipole force > vander waals force \(\therefore\) boiling point order \(\mathrm{n}\)-butanol \(>\) butanone \(>\mathrm{n}\)-Pentane \(>\) iso pentane
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