Low NO, Limit

The rate of generation of HO is balanced by loss through both HO + HO and HO + NO reactions the two loss terms above can be denoted as 

At low NO, the principal sink of HO is the H02 + H02 reaction. Neglecting the OH + N02 reaction, we obtain the steady-state concentration of H02 under low NO conditions  

the rate of 03 production increases linearly with the NO concentration and proportionally to the square root of the HO generation rate. Note that PQi is independent of the CO level this is because NO is the limiting reactant at the low NO limit. 

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Let us obtain the expression for the rate of 03 formation in the CO system in the low NO limit. The overall steady state HO balance is (see Figure 6.1)... 

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