No. For an example see the attached paper. (This discusses variation with pressure, but variation with temperature is analogous.)
[Edited on 2022-8-29 by Metacelsus]
Thank you, this is useful!VeritasC&E - 30-8-2022 at 02:01
Would you know what the case is for the vapors below BP at same pressure (i.e. does the vapor of a liquid that is not boiling have the same
composition of the same liquid when it is boiling?)