JEE Main 2024 Chemistry question
Given below are two statements: one is labeled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Cis form of alkene is found to be more polar than the trans form Reason (R): Dipole moment of trans isomer of 2-butene is zero. In the light of the above statements, choose the correct answer from the options given below:
Answer: (C)
Solution
In trans-2-butene the bond dipoles cancel (μ = 0), while cis-2-butene has a net dipole, which explains why the cis form is more polar.