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Question: Answered & Verified by Expert
Arrange the melting points of following compounds in decreasing order
1. n-butane
2. cis-2-butene
3. trans-2-butene
4. 1-butyne
ChemistryChemical Bonding and Molecular StructureNEET
Options:
  • A 1 > 2 > 3 > 4
  • B 4 > 2 > 3 > 1
  • C 4 > 3 > 2 > 1
  • D 3 > 2 > 1 > 4
Solution:
2407 Upvotes Verified Answer
The correct answer is: 4 > 3 > 2 > 1
Melting point molecular weight, symmetry of the molecule
1μ of the compound. μ=dipolemoment
Hence the correct order of melting point is
1-butyne > trans-2-butene > cis-2-butene > n-butane.

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