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Which substance has a dipole moment? (a) CCl4 (b) CH2Cl2 (c) C2Cl2 (d) C2Cl4

Which substance has a dipole moment?
    (a)    CCl4
    (b)    CH2Cl2
    (c)    C2Cl2
    (d)    C2Cl4

Grade:upto college level

1 Answers

Akshay Meena
askIITians Faculty 34 Points
8 years ago

CCl4 and CH2Cl2

They Both are in a tetrahedral configuration, so the two Cl atoms in CH2CL2 do not cancel out, they are additive. Hence DM >0 But in CCl4 having same tetrahedral configuration and their Cl group is Cancelling out each other. Hence DM=0

C2Cl2 and C2Cl4

C2Cl2 is a linear molecule Cl-CC-Cl so its dipole moment becomes zero and it behaves as a non polar molecule
C2Cl4 is symmetrical and is nonpolar.Hence DM=0

So, The Ans is (A)

 

Thanks & Regards
Akshay Meena, 
askIITians Faculty
M.Tech, IIT Kharagpur

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