Chemistry Reference
In-Depth Information
Table 5. 2 .
Compilation of the reduction potentials of some inorganic radicals; values se-
lected by Wardman (1989). For further data, see also Das et al. (1999)
Couple
E/V
F
•
/F
−
+3.60
•
OH, H
+
/H
2
O
+2.73
Cl
•
/Cl
−
+2.60
SO
4
•−
/SO
4
2
−
+2.47
Cl
2
•−
/2Cl
−
+2.30
Br
•
/Br
−
+2.00
•
OH/OH
−
+1.9 0
O
3
, H
+
/HO
3
•
(pH 7)
+1. 8 0
SeO
3
•−
/SeO
3
2
−
(pH 7)
+1.77
Br
2
•−
/2 Br
−
+1.6 0
CO
3
•−
/CO
3
2
−
+1. 59
I
•
/I
−
+1.4 0
HO
2
•
, H
+
/H
2
O
2
(pH 0)
+1.4 8
(SCN)
2
•−
/2SCN
−
+1. 33
N
3
•
/N
3
−
+1. 30
•
SH/SH
−
+1.15
O
3
/O
3
•−
(pH 11-12)
+1.01
I
2
•−
/2I
−
+1.05
NO
2
•
/NO
2
−
+1.0 0
HO
2
•
/HO
2
−
+0.79
O
2
(
1
∆
g
)/O
2
•−
+0.65
O
2
/O
2
•−
−
0.33*
CO
2
/CO
2
•−
−
1.90
aq/e
aq
−
−
2.87
* This reduction potential relates, by definition, to O
2
-saturated solutions. For comparison with
other values that are based on molarity, a value of −0.179 V should be taken (Wardman 1991).
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