Question

Which of the following compounds has the highest dipole moment $(D)$ ?

• A. $HBr$
• B. $C{H}_{3}COC{H}_3$
• C. $H_{2}S$
• D. $COC{l}_2$

Answer 1

Answer: (B)

(a) Dipole moment of $HBr$



(b) Dipole moment of acctone



due to methyl group, (ERG) lies in direction of oxygen therefore, net dipole moment increases.

${\mu }_{\text{net }}=2.69D$

(c) Dipole moment of $H_{2}S$



(d) Dipole moment of $COC{l}_2$



due of $Cl$ atom net dipole moment decreases.

${\mu }_{net}=0.69D$

Hence, acetone has highest dipole moment