Chemistry - STEREO ISOMERISM Question with Solution | TestHub
Boiling point of geometrical isomers depend on dipole moment.
Boiling point ∝ Polarity
Melting point ∝ Packing efficiency
In which pair of geometrical isomers, compound has more boiling point than compound :
Options:
Answer:
Solution:
Question Explanation:
Asking about the pair in which boiling point of 1st compound is more than 2nd.
Concept :
This question is based on polarity and dipole moment.
Solution:
The boiling point of geometrical isomers is determined by molecular polarity and the resulting intermolecular forces. [Boiling point dipole moment]
Dipole moment is vector quantity.
(a) High dipole moment of cis isomer if similar nature of groups on same side of the double bond.
(b) High dipole moment of trans isomer if opposite nature of groups on opposite side of the double bond. Boiling point order.
Final Answer : Option (B)