6 Reference
112
Conductivity and temperature coefficient for various solutions
Conductivity and related temperature coefficients of representative substances (at 25°C) are
shown in the table below.
Substance
Temp.
(ºC)
Conc.
(wt%)
Cond.
(S/m)
Temp.coef.
(%/
C)
Substance
Temp.
(ºC)
Conc.
(wt%)
Cond.
(S/m)
Temp.coef.
(%/
C)
NaOH
15
5
19.69
2.01
NaCl
18
5
6.72
2.17
10
31.24
2.17
10
12.11
2.14
15
34.63
2.49
15
16.42
2.12
20
32.70
2.99
20
19.57
2.16
30
20.22
4.50
25
21.35
2.27
40
11.64
6.48
Na
2
SO
4
18
5
4.09
2.36
KOH
15
25.2
54.03
2.09
10
6.87
2.49
29.4
54.34
2.21
15
8.86
2.56
33.6
52.21
2.36
Na
2
CO
3
18
5
4.56
2.52
42
42.12
2.83
10
7.05
2.71
NH
3
15
0.1
0.0251
2.46
15
8.36
2.94
1.6
0.0867
2.38
KCl
18
5
6.90
2.01
4.01
0.1095
2.50
10
13.59
1.88
8.03
0.1038
2.62
15
20.20
1.79
16.15
0.0632
3.01
20
26.77
1.68
HF
18
1.5
1.98
7.20
21
28.10
1.66
4.8
5.93
6.66
KBr
15
5
4.65
2.06
24.5
28.32
5.83
10
9.28
1.94
HCl
18
5
39.48
1.58
20
19.07
1.77
10
63.02
1.56
KCN
15
3.25
5.07
2.07
20
76.15
1.54
6.5
10.26
1.93
30
66.20
1.52
－
－
－
H
2
S0
4
18
5
20.85
1.21
NH
4
Cl
18
5
9.18
1.98
10
39.15
1.28
10
17.76
1.86
20
65.27
1.45
15
25.86
1.71
40
68.00
1.78
20
33.65
1.61
50
54.05
1.93
25
40.25
1.54
60
37.26
2.13
NH
4
NO
3
15
5
5.90
2.03
80
11.05
3.49
10
11.17
1.94
100.14
1.87
0.30
30
28.41
1.68
－
－
－
50
36.22
1.56
HNO
3
18
6.2
31.23
1.47
CuSO
4
18
2.5
10.90
2.13
12.4
54.18
1.42
5
18.90
2.16
31
78.19
1.39
10
32.00
2.18
49.6
63.41
1.57
15
42.10
2.31
62
49.64
1.57
CH
3
COOH
18
10
15.26
1.69
H
3
PO
4
15
10
5.66
1.04
15
16.19
1.74
20
11.29
1.14
20
16.05
1.79
40
20.70
1.50
30
14.01
1.86
45
20.87
1.61
40
10.81
1.96
50
20.73
1.74
60
4.56
2.06
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