Question

In the reaction mechanism below, which substance is acting like a catalyst and is it homogeneous or heterogeneous?

Step 1 2N2Og + Cl2(g) → 2N2(g) + 2ClO(g)
Step 2 2ClO(g) → Cl2(g) + O2 (g)

Answer 1

Cl2 is acting like a catalyst because it came out in a same state.
and it's homogeneous reaction because they are all gases.