only one of the isomers of C2H2CL2 has a net dipole moment. Which one might that be? Why?

Answer 1

I'm not sure this is really so. Let's plot out all the isomers, shall we?

First, we have 1,1-dichloroethene:

Cl.............H....
.....\........./.......
......C.=.C.........
..../..........\.......
Cl..............H...

This guy is clearly polar... all the Cl's are going to pull the electrons to the left. 1,2-dichloroethene has two forms. We'll start with the cis form:

.H.............H....
.....\........./.......
......C.=.C.........
..../..........\.......
Cl.............Cl..

Again, this guy is clearly polar. Not as much as the above molecule because the electronegative chlorines are now one atom apart instead of right next to each other. But they're still going to generally suck all the electrons in the 'down' direction on this picture. Now, if you want a non-polar molecule, look at the trans version of 1,2-dichloroethene:

..H.............Cl...
.....\........./.......
......C.=.C.........
..../..........\.......
Cl..............H...

If you draw a line through the chlorines, you'll see that it goes right through the center of this molecule. There's not going to be any NET polarity on this guy at all (though there's still plenty of polarity there, it just all cancels out overall).

So really there's only one WITHOUT a net dipole moment. Hope that helps!

Answer 2

C2h2cl2 Isomers

Answer 3

The molecule of 1,1-dichloroethene has dipole moment not equal to zero.

There are two stereo-isomers of 1,2-dichloroehtene, the cis- and the trans-1,2-dichloroethene. Of these only the trans-isomer has dipole moment = 0 because of the symmetry of the molecule.

Answer 4

The cis isomer would have a dipole moment because the dipoles of the C-Cl bonds do not cancel.

Answer 5

Only 1,1 dichloroethylene will have a dipole. On the other isomers the Cl molecules are balanced on either side, so the dipole movements cancel each other out. In 1,1, dichloroethylene, the Cl molecules are only on one side.

Answer 6

C2h2cl2

Answer 7

answer to ur question according to me is option c. cs2. as both s atoms are doubly bonded with c atom and both s atoms hav 2 lone pairs, which cancel out eacjh other. due to which the net dipole moment is zero. in H2S two lone pairs r there on S due to which net dipole moment is upwards. in ph3 also one lone pair is there on p due to which again dipole moment is upwards. CH2Cl2 can hav different possible structures due to which it cannot hav zero dipole moment, as net doesnt cancel out each other. CH2O also has net dipole moment due to its structure. hope u got my point n are satisfied with the answer.

Answer 8

can u draw the structural form as a formula rather than a drawing ?