Question detail
Explain why larger hydrocarbons have higher boiling points compared to smaller hydrocarbons.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Carbon compounds as fuels and feedstock
Question
Explain why larger hydrocarbons have higher boiling points compared to smaller hydrocarbons.
Answer
Larger hydrocarbons have higher boiling points because they possess more atoms, leading to increased van der Waals forces between molecules. These stronger intermolecular forces require more energy to break, resulting in higher boiling points.
Explanation
This question tests the student's ability to explain the concept of boiling points in relation to molecular size, demonstrating their understanding of intermolecular forces in hydrocarbons.
Common mistake
Boiling point misconception
Students think larger hydrocarbons have lower boiling points because they are lighter
Explain that larger hydrocarbons have higher boiling points due to increased London dispersion forces, which grow with molecular size and surface area
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