1.

Cis-but-2-ene is polar and trans-but-2-ene is non-polar explain.

Answer»

Solution :`CH_(3)CH=CHCH_(3)` has 2 geometrical isomers :
(i) Cis-but-2-ene (ii) TRANS-but-2-ene.
ALWAYS cis-isomer dipole moment `(MU) gt` Trans-isomers.
Isomers of But-2-ene are shown with its isomers and dipole moment.

Trans-but-2-ene has `2-CH_(3)` group, they are in opposite side therefore dipole MOMENTS of `C-CH_(3)` bonds CIRCLE, thus making the trans form non-polar.
Cis isomers are polar because in Cis-but-2-ene has `2-CH_(3)` group and they are on same side of double bond. Electronegativity of `C_CH_(3)` are added, in which the dipole moment is more. therefore, cis-isomer is polar and trans isomer is non-polar.


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