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Which of the following has larger dipole moment ? Explain. 1-Butyne or 1-Butene |
Answer» Solution :The DIRECTION of dipole moments of individual bonds in 1-butyne and 1-butene are shown below :  The resultant dipole moment of both 1-butyne and 1-butene is due to the dipole moment of `CH_3CH_2C` and C-H bonds which oppose each other . Since a SP CARBON is more electronegative than a `sp^2` carbon, therefore, the dipole moment of `CH_3CH_2(sp^3)`-C(sp) bond in 1-butyne is more than that of `CH_3CH_2(sp^3)-C(sp^2)` bond in 1-butene. As a result, the dipole moment of 1-butyne is more than that of 1-butene. |
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