Under the influence of oxidizing agents, hypophosphorous acid is transformed into phosphorous acid: 

The kinetics of this transformation present the following features. At a low concentration of oxidizing agent,

At a high concentration of oxidizing agent,

To explain the observed kinetics, it has been postulated that, with hydrogen ions as catalyst, normal unreactive H₃P0₂ is transformed reversibly into an active form, the nature of which is unknown. This intermediate then reacts with the oxidizing agent to give H₃P0₂. Show that this scheme does explain the observed kinetics.

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H₂PO₂ oxidizing agent ►H3PO3