Question

The dipole moment is the highest for [AIIMS 2004]
A) Trans-2-butene B) 1, 3-Dimethylbenzene C) Acetophenone D) Ethanol

Answer 1

Dipole moment will be high a species or group creates polar in organic compound. Here, trans 5,2 - butane is non plar molecule so, dipole moment of it is zero.
Dipole moment is highest in case of acetophenone , because it contained strongest electron withdrawing group . Due to this reason charge developed in acetophenone compound is higher than other .

Hence, answer is option (C) acetophenone.

Answer 2

Answer:

Explanation:Out of B, C and D, acetophenone (C) has highest dipole moment due to resonance.