Reduction of NO by H2
In an example discussed earlier we saw that the reaction of NO with H2 leads to a rate expression that is different from what might be expected from the equation of the reaction alone: |
The reaction is first order in H2 concentration, not second order. One mechanism that will account for this rate behavior is
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This mechanism is illustrated in fig 7 opposite. If all reactions except the k3 process are quite fast, then the rate equation is
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You should be able to use the first equilibrium condition to eliminate N202 concentration, and show that the rate equation given previously is the result.
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