[dt5sphd]

I have two questions which need answering. If you can help, i would be very thankful.

1. With the reaction mechanism:
This reaction is pretty straightforward, but i wanted to know in a bit more detail the steps.
http://img705.imageshack.us/i/44930962.png/

In the first step, by what chemical reaction mechanism does the H atom separate from the parent molecule and join the OH ion ? Is it by elimination reaction ? Or inductive effect ? What is it ? similarly for the other steps, the reaction mechanisms involved.

2. With a catalysed reaction:
how does a metal ion act as a catalyst in the chemiluminescence reaction of luminol + H₂O₂
Not just ""it lowers the activation energy", preferably a more scientific answer.

Thank you