The boiling points of the alkanes increase with increasing chain length because
Answer and explanation
Correct answer: A. stronger London (dispersion) forces act between longer molecules
- Step 1: Larger molecules have larger surface areas and more electrons, giving stronger London forces.
Answer
stronger London (dispersion) forces act between longer molecules.
Why not the others: the covalent bonds between carbon atoms become stronger: boiling does not break covalent bonds. hydrogen bonds form between the molecules: alkanes have no hydrogen bonds. the molecules become more polar: alkane molecules remain non-polar.
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