Which substance in each pair would be expected to show the largest vapor pressure at a given temperature?
(a) H2O(l) or HF(l)
HF
H2O
Explain your reasoning.
2007-05-07 21:16:50 · 3 answers · asked by kevin 1 in Science & Mathematics ➔ Chemistry
HF. H2O can form hydrogen bonds, which is the strongest form of intermolecular force. Therefore, H2O molecules will be bonded to each other more, and at a given temperature, less of them will evaporate. so HF would have the larger vapor pressure.
2007-05-07 21:21:01 · answer #1 · answered by Sam 5 · 0⤊ 0⤋
HF, weaker Hydrogen bonding than H2O.
2007-05-07 21:28:53 · answer #2 · answered by ag_iitkgp 7 · 0⤊ 0⤋
VP has a lot of causes. Basically what I think you are asking is about the degree of Hydrogen bonding. H2O has a lower VP than H2F2 because it has a greater degree of H bonding.
2007-05-07 21:22:28 · answer #3 · answered by christopher N 4 · 0⤊ 0⤋