Consider the following mechanism for a reaction in aqueous solution and indicate the species acting as a

Question:

Consider the following mechanism for a reaction in aqueous solution and indicate the species acting as a catalyst:

Explain why you believe this species is a catalyst. What is the overall reaction? What substance might be added to the reaction mixture to give the catalytic activity? Obtain the average rate of decomposition of NO2 in units of M/s for each time interval.