Discussion Forum



1)

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


A) HBr

B) $CH_{3}COCH_{3}$

C) $H_{2}S$

D) $COCl_{2}$

Answer:

Option B

Explanation:

(a)   Dipole  moment of HBr

 1372021952_k6.PNG

(b)    Dipole moment of acetone

    1372021356_k7.PNG

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

    $\mu _{net}=2.69 D$

 (c)  Dipole moment of $H_{2}S$

 1372021557_k8.PNG

$\mu _{net}=0.97 D$

 (d) Dipole moment of $COCl_{2}$

 1372021774_k9.PNG

 due of Cl atom net dipole moment decreases.

$\mu _{net}=0.69 D$

 Hence, acetone has highest dipole moment