Thallium(I) is oxidized by ceriuin(IV) as follows:The elementary steps, in the presence of...

Thallium(I) is oxidized by ceriuin(IV) as follows:

The elementary steps, in the presence of Mn(II), are as follows:

(a) Identify the catalyst, intermediates, and the rate- determining step if the rate law is rate = k[Ce4+][Mn2+], (b) Explain why the reaction is slow without the catalyst. (c) Classify the type of catalysis (homogeneous or heterogeneous).