[ProblemSets]

How I answered: c, b, c, a, b
could you please check them
thanks!

1. Which force would cause a compound to have the highest boiling point?
a.) Hydrogen Force b.) Dipole-Dipole Force c.) London Dispersion Force

2. PCl3 would form which force?
a.) Hydrogen Force b.) Dipole-Dipole Force c.) London Dispersion Force

3. Which force is caused by the largest differences in electronegativites?
a.) Hydrogen Force b.) Dipole-Dipole Force c.) London Dispersion Force

4. Which force allows rocks to skip the surface of a lake?
a.) Hydrogen Force b.) Dipole-Dipole Force c.) London Dispersion Force

5. Which force would the compound below form?
a.) Hydrogen Force b.) Dipole-Dipole Force c.) London Dispersion Force

[enahs]

1-wrong
2- b is correct, but C is also involved (always)
3-wrong...maybe...again like the nest question, it really does depend on where you look at it from.
4-this question is...ehh....If you look at what gives water its unique properties, yes A is correct. If you look at the interactions of the actual rock and water, it is incorrect. Really, the total correct answer would be A and C....but I am not sure how your teacher wants you to look at it.
5-wrong, they are all involved. You have hydrogen connected to a highly electronegative element (N) which opens up the possibility for hydrogen bonding, it is clearly polar as you pointed out, and c is always in play. The answer is all of them. But, the one that could be assigned the "most important" would be the hydrogen bonding.

hydrogen bonding >> dipole-dipole > London-Dispersion

[ProblemSets]

If you have two polar molecules, the positive end of one will be attracted to the negative end of the other, which results in dipole-dipole forces. So I believe the answer to #3 is (B), and not (C) as i had initially claimed.

[ProblemSets]

updated answers:

1=a
2=b,c
3=b
4=a,c
5=a,b,c

what do you guys think

[Mitch]

Using staff time to check your problems set answers is a waste of staff time.

[ProblemSets]

problemsets is actually the name i use on a math forum. and i just started using it on all the other forums that I use. and i don't think that it is a waste.

[Borek]

Mitch is not referring to your nick but to your behavior.