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trans-Pent-2-ene is polar with trans-but-2-ene is non polar. Explain. |
Answer» Solution :In trans-but-2-ene, the diple momens of the C-`CH_3` bonds are equal and opposite and HENCE they EXACTLY cancel out each other. Thus, trans-but-2-ene is non-polar.  However, in trans-pent-2-ene, the +I-effect of `CH_3CH_2`-group is higher than of `CH_3` group, therefore, the DIPOLE moment of `C-CH_3` and `C-CH_2CH_3` bonds are unequal . Although these two DIPOLES oppose each other , yet they do not exactly cancel out each other and hence trans-pent-2-ene has a small but finite dipole moment and thus is polar. |
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