The following compounds of molecular masses 58
and 60 are ranked in order of increasing boiling points b p (K)
Molecular Mass
n-Butane
273
58
Methoxyethane
281
60
Propanal
322
58
Acetone
329
58
Propan-1-ol
370
60
The lower members of aldehydes and ketones such as methanal,
ethanal and propanone are miscible with water in all proportions,
because they form hydrogen bond with water