79
Composition of the Major Components of Seawater
0
–5
5
–10
0
10
Values of ∆(e
i /Cl) × 10
5
–5
0
5
Cl (‰)
20
40
60
80
100
–30
–20
–10
0
10
Na
+
Mg
2+
K
+
Ca
2+
Figure 2.18
Values of the equivalents for cations divided by chlorinity for evaporating Mexican lagoon waters.
Table 2.8
Calculation of the Infinite Dilution Equivalent Conductance
of Various Waters at 25°C
Ion
E i Λ 0 i
a
Λ 0 i
Seawater
River Water
St. Lawrence River
Ca 2+
59.51
46.97
31.41
35.40
Mg 2+
53.50
9.32
12.71
13.15
Na+
50.10
38.71
9.67
7.24
K+
73.50
1.24
3.06
0.91
HCO 3–
44.50
0.14
29.79
25.19
SO 4
2–
89.02
7.46
13.14
13.89
Cl –
76.35
68.77
11.83
18.61
NO 3–
71.46
0.20
0.81
—
Λ 0 =
127.85 b
112.2
114.41
a E i is the equivalent function of species.
b Λ 0 = ∑ E i Λ 0 i .
Composition of the Major Components of Seawater
0
–5
5
–10
0
10
Values of ∆(e
i /Cl) × 10
5
–5
0
5
Cl (‰)
20
40
60
80
100
–30
–20
–10
0
10
Na
+
Mg
2+
K
+
Ca
2+
Figure 2.18
Values of the equivalents for cations divided by chlorinity for evaporating Mexican lagoon waters.
Table 2.8
Calculation of the Infinite Dilution Equivalent Conductance
of Various Waters at 25°C
Ion
E i Λ 0 i
a
Λ 0 i
Seawater
River Water
St. Lawrence River
Ca 2+
59.51
46.97
31.41
35.40
Mg 2+
53.50
9.32
12.71
13.15
Na+
50.10
38.71
9.67
7.24
K+
73.50
1.24
3.06
0.91
HCO 3–
44.50
0.14
29.79
25.19
SO 4
2–
89.02
7.46
13.14
13.89
Cl –
76.35
68.77
11.83
18.61
NO 3–
71.46
0.20
0.81
—
Λ 0 =
127.85 b
112.2
114.41
a E i is the equivalent function of species.
b Λ 0 = ∑ E i Λ 0 i .