"acetone (b.p.=56°C)" would be the highest vapor pressure.
- The maximum vapor pressure would be found at the lowest temperature. Acetone seems to have the smallest intermolecular hydrogen bonding and therefore the greatest evaporation rate.
- Acetone seems to have the different boiling points of something like the choices shown. As a result, acetone seems to be the right answer, while the other answers are erroneous even though they have greater boiling pressures than acetone.
Thus the above option i.e., "alternative B" is correct.
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