Experimental measurement of the rate of the reaction o( 3 P ) + H 2 ( v = 0) → OH( v = 0) + H at T = 298 K
Measurement of the rate of the reaction equation image is reported. The measurements were made in a flow tube apparatus. The result is based on data for the absolute density of OH( v = 0) obtained from laser‐induced fluorescence measurements in the (0–0) band of the OH( A 2 Σ + → X 2 II) system. The...
Gespeichert in:
Veröffentlicht in: | International journal of chemical kinetics 1980-07, Vol.12 (7), p.451-468 |
---|---|
Hauptverfasser: | , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | Measurement of the rate of the reaction
equation image
is reported. The measurements were made in a flow tube apparatus. The result is based on data for the absolute density of OH(
v
= 0) obtained from laser‐induced fluorescence measurements in the (0–0) band of the OH(
A
2
Σ
+
→
X
2
II) system. The density of oxygen atoms was varied by changing the flow rate of NO which is consumed in the reaction N + NO → O + N
2
. We find that
k
1
(298 K) = (5.5 ± 3.0) × 10
6
cm
3
/mol sec. This result was obtained with consideration and control of the effect of reaction (2):
equation image
for which vibrationally excited hydrogen is created by energy transfer in the presence of active nitrogen. It was found that the addition of N
2
or CO
2
effectively suppressed the excitation of H
2
(
v
= 1). Measurements of the density of H
2
(
v
= 1) were made by VUV absorption in the Lyman band system of H
2
. All of the reports of low‐temperature measurements and some recent theoretical calculations for
k
1
are discussed. The present result confirms and extends the growingevidence for significant curvature in the low‐temperature end of a modified Arrhenius plot of
k
1
(
T
). |
---|---|
ISSN: | 0538-8066 1097-4601 |
DOI: | 10.1002/kin.550120703 |