While trans isomers often dominate in melting point, Cis isomers typically possess higher boiling po — Isomerism and Stereochemistry Chemistry Question
Question
While trans isomers often dominate in melting point, Cis isomers typically possess higher boiling points. What is the fundamental physical chemistry reason behind this?
Answer: B
💡 Solution & Explanation
Boiling point is dictated by the strength of intermolecular forces in the liquid phase. Because the cis isomer is highly polar (higher dipole moment), it experiences stronger intermolecular dipole-dipole attractions. More heat energy is required to break these forces, raising the boiling point.
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