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Which of the following alkenes has the highest boiling point?

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Question: Which of the following alkenes has the highest boiling point?

Options:

  1. Ethene
  2. Propene
  3. Butene
  4. Pentene

Correct Answer: Pentene

Solution: 

Pentene has the highest boiling point due to its larger molecular size and increased van der Waals forces.

Which of the following alkenes has the highest boiling point?

Practice Questions

Q1
Which of the following alkenes has the highest boiling point?
  1. Ethene
  2. Propene
  3. Butene
  4. Pentene

Questions & Step-by-Step Solutions

Which of the following alkenes has the highest boiling point?
Correct Answer: Pentene
  • Step 1: Understand that alkenes are hydrocarbons with at least one double bond between carbon atoms.
  • Step 2: Know that boiling point is affected by molecular size and the strength of intermolecular forces.
  • Step 3: Recognize that larger molecules generally have higher boiling points because they have more surface area for van der Waals forces.
  • Step 4: Compare the alkenes given in the question based on their molecular size.
  • Step 5: Identify that pentene is larger than other alkenes listed, which means it has stronger van der Waals forces.
  • Step 6: Conclude that pentene will have the highest boiling point among the alkenes.
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