Can you help me understand catalysts and inhibitors in chemical reactions?
I understand homogenous which is SO_3 + 1/2 O_2 = SO_4 ; but I don't understand why sometimes it's split into two parts or when it's heterogenous too like solidus + gas =?
liqvidus + gas = aqueous ? why?
example;
____ + ____ = _____ + _____
and how do I write chemical reactions if I was given two/three chemicals?

Question

Can you help me understand catalysts and inhibitors  in chemical reactions?
I understand homogenous which is SO_3 + 1/2 O_2 = SO_4 ; but I don't understand why sometimes it's split into two parts or when it's heterogenous too like solidus + gas =? 
liqvidus + gas = aqueous ? why? 
example;
____ + ____ = _____ + _____
and how do I write chemical reactions if I was given two/three chemicals?

aaronq · Answer

are you talking about catalysts or phases in chemical reactions?

abb0t · Answer

catalyst's provides an alternative route of reaction where the activation energy is lower than the original chemical reaction