Chemistry Reference
In-Depth Information
NO
3
+ H
~70%
ONOOH
NO
2
~30%
OH + NO
2
NO
2
+ O
2
O
2
+ OH
NO + O
2
ONOO
2NO
2
+ 2H
N
2
O
3
H
2
O
ONOO
NO
2
+ NO
2
+ NO
2
net: ONOOH + ONOO
2(1
-
x
)NO
3
+ 2
x
NO
2
+
x
O
2
+ H
Figure 5.13.
decomposition of peroxynitrite (adapted from goldstein and Merényi
[132] with the permission of Elsevier Inc.).
TABLE 5.4. Summary of the Reactions and Their Rate Constants Involved in the
Decomposition Mechanism of Peroxynitrite at 25°
Reaction
K
Reference
0.90 ± 0.05/second
a
ONOOH NO H
→
−
+
+
3
ONOOH → NO
2
+ OH
0.35 ± 0.03/second
a
2
k
= 1.3 × 10
8
/M/s
[167]
2
NO H O NO NO
+
→
−
+
−
+
2
H
+
2
2
2
3
5.3 × 10
9
/M/s
[168]
OH NO
+
−
→
OH NO
−
+
2
2
OH + ONOO
−
→ NO + O
2
+ OH
−
4.8 × 10
9
/M/s
[169]
(5 ± 1) × 10
9
/M/s
[143]
NO O
+ →
−
ONOO
−
2
0.020 ± 0.003/second
[168, 170]
ONOO
−
→
NO O
+
−
2
NO
2
+ NO
{ReversReact}
N
2
O
3
k
7
= 1.1 × 10
9
/M/
s
k
−7
= 8.4 × 10
4
/second
[171]
2 × 10
3
+ 10
8
[OH
−
] + (6.4 −
9.4) × 10
5
[phosphate]/
second
[108, 172]
N O H O
+
→
2
NO
−
+
2
H
+
2
3
2
2
3.1 × 10
8
/M/s
[173]
ONOO N O
−
+
→
2
NO NO
+
−
2
3
2
2
4.5 × 10
8
/M/s
[120]
NO O
+ →
−
NO O
−
+
2
2
2
2
a
ONOOH decomposes with
k
d
= 1.25/second, yielding 72%
NO H
3
−
+
+
and 28% NO
2
+ OH.
Adapted from goldstein and Merényi [132].
Search WWH ::
Custom Search