Electrical Conductivity of Aqueous Solutions
The following table gives the electrical conductivity of aqueous
solutions of some acids, bases, and salts as a function of concentration. All values refer to 20 °C. The conductivity κ (often called
specific conductance in older literature) is the reciprocal of the
resistivity. The molar conductivity Λ is related to this by Λ = κ/c,
where c is the amount-of-substance concentration of the electrolyte. Thus if κ has units of millisiemens per centimeter (mS/cm),
as in this table, and c is expressed in mol/L, then Λ has units of S
cm2 mol-1. For these electrolytes the concentration c correspond-
ing to the mass percent values given here can be found in the table
“Concentrative Properties of Aqueous Solutions” in Section 8.
References
1. CRC Handbook of Chemistry, and Physics, 70th Edition, Weast, R. C.,
Ed., CRC Press, Boca Raton, FL, 1989, p. D-221.
2. Wolf, A. V., Aqueous Solutions and Body Fluids, Harper and Row,
New York, 1966.
Electrical Conductivity κ in mS/cm for the Indicated Concentration in Mass Percent
Name
Acetic acid
Ammonia
Ammonium chloride
Ammonium sulfate
Barium chloride
Calcium chloride
Cesium chloride
Citric acid
Copper(II) sulfate
Formic acid
Hydrogen chloride
Lithium chloride
Magnesium chloride
Magnesium sulfate
Manganese(II) sulfate
Nitric acid
Oxalic acid
Phosphoric acid
Potassium bromide
Potassium carbonate
Potassium chloride
Potassium dihydrogen
phosphate
Potassium hydrogen carbonate
Potassium hydrogen phosphate
Potassium hydroxide
Potassium iodide
Potassium nitrate
Potassium permanganate
Potassium sulfate
Silver(I) nitrate
Sodium acetate
Sodium bromide
Sodium carbonate
Sodium chloride
Sodium citrate
Sodium dihydrogen phosphate
Sodium hydrogen carbonate
Sodium hydrogen phosphate
Sodium hydroxide
Sodium nitrate
Sodium phosphate
Sodium sulfate
Sodium thiosulfate
Strontium chloride
Sulfuric acid
Trichloroacetic acid
Zinc sulfate
Formula
CH3COOH
NH3
NH4Cl
(NH4)2SO4
BaCl2
CaCl2
CsCl
H3C(OH)(COO)3
CuSO4
HCOOH
HCl
LiCl
MgCl2
MgSO4
MnSO4
HNO3
H2C2O4
H3PO4
KBr
K2CO3
KCl
KH2PO4
KHCO3
K2HPO4
KOH
KI
KNO3
KMnO4
K2SO4
AgNO3
NaCH3COO
NaBr
Na2CO3
NaCl
Na3C6H5O7
NaH2PO4
NaHCO3
Na2HPO4
NaOH
NaNO3
Na3PO4
Na2SO4
Na2S2O3
SrCl2
H2SO4
CCl3COOH
ZnSO4
0.5%
0.3
0.5
10.5
7.4
4.7
8.1
3.8
1.2
2.9
1.4
45.1
10.1
8.6
4.1
28.4
14.0
5.5
5.2
7.0
8.2
3.0
4.6
5.2
20.0
3.8
5.5
3.5
5.8
3.1
3.9
5.0
7.0
8.2
2.2
4.2
4.6
24.8
5.4
7.3
5.9
5.7
5.9
24.3
10.3
2.8
1%
0.6
0.7
20.4
14.2
9.1
15.7
7.4
2.1
5.4
2.4
92.9
19.0
16.6
7.6
6.2
56.1
21.8
10.1
10.2
13.6
15.7
2%
0.8
1.0
40.3
25.7
17.4
29.4
13.8
3.0
9.3
3.5
183
34.9
31.2
13.3
10.6
108
35.3
16.2
19.5
25.4
29.5
5.9
8.9
9.9
38.5
7.5
10.7
6.9
11.2
6.1
7.6
9.7
13.1
16.0
7.4
4.4
8.2
8.7
48.6
10.6
14.1
11.2
10.7
11.4
47.8
19.6
5.4
11.0
17.0
18.3
75.0
14.2
20.1
13.0
21.0
12.0
14.4
18.4
23.3
30.2
12.8
9.1
15.0
15.6
93.1
20.4
22.7
19.8
19.5
22.0
92
37.2
10.0
5%
1.2
1.1
95.3
57.4
40.4
67.0
32.9
4.7
19.0
5.6
10%
1.5
1.0
180
105
76.7
117
65.8
6.2
32.2
7.8
15%
1.7
0.7
20%
1.7
0.5
147
109.0
157
102
7.0
42.3
9.0
185
137.0
177
142
7.2
9.9
10.4
76.4
66.9
27.4
21.6
127
108
42.7
34.5
155
129
54.2
43.7
170
134
51.1
47.6
165
122
44.1
146
98
65.6
31.5
47.7
58.0
71.9
59.4
95.6
109
143
88.4
144
152
208
118
194
188
146
173
209
44.6
72.4
101
128
71.8
87.3
110
124
188
157
224
182
72.0
64.1
122
88.6
171
52.0
43.3
92.8
69.3
157
112
69.2
191
129
64.3
216
162
204
57.1
49.6
222
57.3
53.1
53.5
54.0
82.6
111
134
152
165
178
71.3
76.7
91.5
91.1
104
127
109
123
153
134
168
136
178
118
148
33.7
193
43.3
221
25.0
38.8
40.3
178
35.2
47.0
30.5
48.0
26.7
30.9
44.0
47.0
70.1
26.2
21.0
31.4
31.4
206
46.2
43.5
42.7
43.3
49.1
211
84.7
20.5
88.6
49.8
53.4
84.6
74.4
126
42.1
33.2
25%
1.6
0.4
30%
1.4
40%
1.1
50%
0.8
215
183
172
106
7.1
10.5
9.9
8.6
223
46.1
5-71