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Organic Chemistry
25 Feb 2008 17:05:21 IST
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anchit saini
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25 Feb 2008 17:10:18 IST
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CHCl3 cos there there is more polarity in C-Cl than in C-H bond
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25 Feb 2008 17:10:44 IST
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CHCl3
That is because, this molecule will have a tetrahedral structure (see it in you mind)
Then, Chlorine, being more electronegative than Carbon, will pull electron toward itself.
Now tell me, which would cause more pulling, 2 cl atoms or 3 cl atoms?
...
That's the answer.
That is because, this molecule will have a tetrahedral structure (see it in you mind)
Then, Chlorine, being more electronegative than Carbon, will pull electron toward itself.
Now tell me, which would cause more pulling, 2 cl atoms or 3 cl atoms?
...
That's the answer.
25 Feb 2008 17:15:13 IST
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but according to me CH2Cl2 should hav greater dipole moment..
dipole moment is a vector quantity ......
so, in CHCl3 due to tetrahedral arrangement 3 C-Cl dipoles will result in less dipole moment as compared to CH2Cl2.......
infact , CH3Cl is having max. dipole moment among chloromethanes.........
25 Feb 2008 17:25:44 IST
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in the ist dia chci3 is shown. cl cl cancel each other. but on the otherside h-cl dipole moment exists
in 2nd dia there is no dipole moment...............since h-h and cl-cl cancel each other
there is 1 more structure possible
in 3rd dia dipole moment exists
ch2cl2 will hav greater dipole moment
25 Feb 2008 17:43:56 IST
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u can imagine the situation like this........
u know that CCl4 is having zero dipole moment..........
suppose if we remove a C-Cl dipole from the structure
then remaining 3 C-Cl dipoles will behave as single C-Cl dipole
whose polarity is opposite to that of single C-Cl dipole which we have removed........
hence d.m of CCl3 < CHCl2
note: in the whole xplaination I have neglected the d.m of C-H bonds
4 clear understanding and if it is taken into account it will not cause any change in result ............
u know that CCl4 is having zero dipole moment..........
suppose if we remove a C-Cl dipole from the structure
then remaining 3 C-Cl dipoles will behave as single C-Cl dipole
whose polarity is opposite to that of single C-Cl dipole which we have removed........
hence d.m of CCl3 < CHCl2
note: in the whole xplaination I have neglected the d.m of C-H bonds
4 clear understanding and if it is taken into account it will not cause any change in result ............
26 Feb 2008 20:27:48 IST
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here is the perfect solution
CHCl3 have more dipole moment. in CHCl3 have two equivalent bond C-Cl which
cancel each other but one C-H bond is not cancelled with C-Cl . so dipole moment
is there. but in CHCl2 there is two equivalent bond C-Cl as well as two equivalent
bond C-H . so cancel each other so almost zero dipole moment
CHCl3 have more dipole moment. in CHCl3 have two equivalent bond C-Cl which
cancel each other but one C-H bond is not cancelled with C-Cl . so dipole moment
is there. but in CHCl2 there is two equivalent bond C-Cl as well as two equivalent
bond C-H . so cancel each other so almost zero dipole moment
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