COMEDK · Chemistry · 14. Hydrocarbons
Arrange the given alkanes in increasing order of their boiling points.
(A) 2, 2-dimethylpropane
(B) 2-methylbutane
(C) \(n\)-pentane
(D) \(n\)-butane
- A \(A < B < C < D\)
- B \(D < A < B < C\)
- C \(C < A < B < D\)
- D \(D < C < B < A\)
Answer & Solution
Correct Answer
(B) \(D < A < B < C\)
Step-by-step Solution
Detailed explanation
The boiling point of alkanes increases with an increase in molecular mass due to stronger van der Waals forces. Since \(n\)-butane (D) has four carbon atoms while the others have five, it has the lowest boiling point. For isomeric alkanes, the boiling point decreases with an…
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