system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] I'm Chemical King! I speed up or slow down chemical reactions! What does that mean?

So, I'm Condo Arlik from the planet Phlon. I'm a mutant with the power to be a catalyst, I can slow down or speed up any chemical reaction! Now I'm Chemical King, a member of the Legion of Super-Heroes! Mainly I just make things rust. Sometimes I can make things burst into flames. Brainiac 5 says I have the potential to do way more with these powers, but is too busy in his lab to explain anything to me. So, what sort of things can I do with the power to slow down or speed up chemical reactions? How can I save the galaxy?
gpt
Get into medicine, and speed up the time spent mass producing medicines. You'd be astonished how long certain medicines take to make, and that's just the chemicals slowly combining in the right way for ages. Or perhaps get into engineering, by speeding up chemical reactions you can decrease time spent slowly building things like nanotubes. The thing you must remember is that practically all of existence runs off of chemical reactions of a sort. By speeding up these chemical reactions, you can speed up life. You can slow it to a stasis, even. Slow down a humans chemical reactions enough and they become basically inert. They can't move, the chemicals needed to power them just can't activate fast enough. Alternatively, increase chemical reactions in a human, and they become faster.

There's more here than just controlling how fast chemicals react. You're creating a very specialized time field, one that can accelerate or slow down reactions. Put some study into chemistry, get a degree in that stuff. You would be astonished how much more you can accomplish the more you understand what you're able to control.