The temperature dependence of the reactions H2(v = 1) + D, H

Abstract The temperature dependence of the rate constant for the reactions H 2 ( v = 1)+D and H 2 ( v = 1)+H was studied using a flow-tube method combined with EPR and thermometric techniques. The rate constants (in cm 3 /molecule s) were found to be k u D = (2.3 ± 1.3)×10 −10 exp[−(3200 ± 600)/ RT ]. k n D = (1 ± 0.5)×10 −10 exp[−(3100 ± 300)/ RT ]. k r D ⩽ 2.7×10 −13 over the range 254–367 K for H 2 ( v = 1)+D and k n H + k r H = (1.8 ± 0.7)×10 −13 at 254 K and (3.9 ± 1.0)×10 −13 at 298 K for H 2 ( v = 1)+H.