Catalase is an enzyme that promotes the conversion of hydrogen peroxide (H 2 O 2 ) into

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Catalase is an enzyme that promotes the conversion of hydrogen peroxide (H2O2) into water and oxygen. The diffusion constant and radius for catalase are 6.0 × 10–7 cm2 s–1 and 51.2 Å, respectively. For hydrogen peroxide the corresponding values are 1.5 × 10–5 cm2 s–1 and r ∼ 2.0 Å. The experimentally determined rate constant for the conversion of hydrogen peroxide by catalase is 5.0 × 106 M–1 s–1. Is this a diffusion-controlled reaction?

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Physical Chemistry

ISBN: 978-0321812001

3rd edition

Authors: Thomas Engel, Philip Reid

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