Question

Question

Answer 1

Which compound is most likely to have the highest heat of vaporization?

Answer 2

A. H2O
B. NH3
C. HF
D. all three are the same

Answer 3

@sweetburger this was taken from that test you sent

Answer 4

They are all liquids at room temperature aren't they?

Answer 5

doesn't specify however they should be

Answer 6

All have the capability to hydrogen bond including an Hydrogen covalently bonded to either an F,O, or N

Answer 7

So i don't see how they could have equal heats of vaporization, to me one factor to consider would be molecular mass as well.

Answer 8

If mass was taken into consideration it would be HF as it has the biggest molecular mass

Answer 9

Water has a heat of vaporization value of 40.65 kJ/mol.
ΔvapH (kJ/mol) Temperature (K) HF 25.2

Answer 10

HF has a larger molecular weight than water and the same ability to hydrogen bond so why would these values be different?

Answer 11

Hey can't we take it because all of it has the capability of forming H bonds. H bonds have the highest bond strength Hence the heat needed for liquid to convert to vapor is high. So I think all have the same range

Answer 12

The intermolecular bonds possibly

Answer 13

BTW the say that H2O is the answer.

Answer 14

@taramgrant0543664 you are correct

Answer 15

so, they say that water can form more hydrogen bonds than HF, so it's the extent of H-bonding

Answer 16

Good to know

Answer 17

H2O can form 2 where as the other two can only form 1 each