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CH3Cl or CHCl3 Which has greater dipole and why?
Hii deeksha
CH3Cl>CH2Cl2 >CHCl3 >CCl4 this is the trean for dipole moment ...
Reason .....
for CH3Cl > CHCl3 ...
(1) (2)
the dipole moments in both 1 and 2 are additive(that can be shown by drawing the tetrahedral structures of the two compounds and then finding the directions of bond polarity for each bond). Cl tends to have a ∂- charge due its strong electro negativity and hence in 2 the Cl-Cl repulsion occurs as a result of which the Cl-C-Cl bond angle increases. we know that vector addition involves cos{bond angle}...hence as the bond angle increases the cosine value decreases and as a result the resultant dipole moment decreases !
Its better you keep this trend in mind....because there is always a question on this ...so remeber it...
regards
Yagya
askiitians_expert
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