Geology Reference
In-Depth Information
Figure 5 Spatial distribution of zinc concentrations (in ng m
3
) in air over the North Sea
during 1989
(From Ottley and Harrison.
13
)
where p
s
¼
saturation vapour pressure and S
aq
¼
equilibrium solubility
in water.
Worked example
For benzene
p
s
¼
12.7 kPa at 251C
S
aq
¼
1
:
78 g L
1
¼
1
:
78
1000
¼
mol m
3
78
Calculate H for benzene at 251C.
For benzene
H
¼
p
s
S
aq
H
¼
12
:
7
10
3
ð
1
:
78
10
3
Þ=
78
¼
556 Pa m
3
mol
1
