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The Reaction of Hydroxyl Radical with Ozone,HO2(g)+ O3(g) \to OH(g)+ 2 O2(g),is Rapid

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The reaction of hydroxyl radical with ozone,HO2(g)+ O3(g) \to OH(g)+ 2 O2(g),is rapid.The rate of reaction is measured in milliseconds for different OH2 concentrations in the presence of a large excess of O3.
 The reaction of hydroxyl radical with ozone,HO<sub>2</sub>(g)+ O<sub>3</sub>(g) \to OH(g)+ 2 O<sub>2</sub>(g),is rapid.The rate of reaction is measured in milliseconds for different OH<sub>2</sub> concentrations in the presence of a large excess of O<sub>3</sub>.   A plot of ln[HO<sub>2</sub>] versus time has a slope of -0.0103 and an intercept of -12.991.What is the pseudo-first-order rate constant,and what is the second-order rate constant?
A plot of ln[HO2] versus time has a slope of -0.0103 and an intercept of -12.991.What is the pseudo-first-order rate constant,and what is the second-order rate constant?

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kpseudo-first order = 0.0103 ...

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