Answer to Question #59791 in General Chemistry for steph

Question

The vapor pressure at 20 degrees Celcius for the following substances is
Methyl alcohol 96 torr
Acetic acid 11.7 torr
Benzene 74.7 torr
Bromine 173 torr
Water 17.5 torr
Carbon tetrachloride 91 torr
Mercury 0.0012 torr
Toluene 23 torr

A) Arrange these substances in order of increasing rate of evaporation.
b) Which substance listed has the highest boiling point and which one has the lowest?

Answer 1

A) Mercury 0.0012 torr
Acetic acid 11.7 torr
Water 17.5 torr
Toluene 23 torr
Benzene 74.7 torr
Carbon tetrachloride 91 torr
Methyl alcohol 96 torr
Bromine 173 torr

B) The boiling point decreases as the vapour pressure increases. Therefore Bromine has the lowest boiling point. Mercury has the highest 0.0012 torr.