1. CO2
2. H2O
3. CH4
4. NH3
5. CCL4
This stuff is so confusing...Any help would be greatly appreciated.
2007-03-12 18:13:12 · 3 answers · asked by Jenny3360 1 in Science & Mathematics ➔ Chemistry
(DISCLAIMER: While I am answering this question, I'm working with the assumption that you're doing just fine in your science subjects.) To know the polarity of a molecule, you'd have to solve for it's dipole moment. Now, in order to do that, you'd have to have mastered the skill of doing lewis dot symbol structures (which, unfortunately, is done only through TONS of practice. Trust me - it gets better with time). Going back to dipole moments - keep in mind that adding dipole moments is like adding vector quantities (head-to-tail addition). Based on your lewis structure, the direction of the vector would be towards the more electronegative of the atoms (I hope I'm still making sense to you). NOW, to answer which ones are polar... Only water and ammonia (I think, but you'd better check anyway just to sure) are polar.
2007-03-12 18:45:53 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Yes, but a simpler way might be to find a diagram of the molecule that shows relative positions of the atoms. If there is an imbalance so that a negative partner is on one side of the molecule and the positive is on the other, the molecule will have electric poles. In H2O for instance, the 2 Hs are at a 105 degree angle relative to the O. This means that the O is on one side and the Hs on the other.
2007-03-12 19:06:42 · answer #2 · answered by smartprimate 3 · 0⤊ 0⤋
H2O i believe is polar because soaps are used to rid oils since they are bi-polar and help bond the non-polar oil to polar water, or the other way around. not sure but hope you get the logic
2007-03-12 18:18:15 · answer #3 · answered by Anonymous · 0⤊ 0⤋