transition metals- CATALYSTS Flashcards
1
Q
how do transtion metals act as catalysts?
A
-by changing oxidation states by gaining or losing electrons in their D orbital
2
Q
what is a hetrozygous catalyst?
A
-its in a different phase to the reactants/different oxidation state
3
Q
what happens if the number of catalysts increase?
A
-surface area increases so rate of reaction also increases
4
Q
examples of hetrozygous catalysts?
A
- iron in the Haber process to make ammonia
- vanadium oxide in the Contact process to make sulfuric acid
5
Q
what is catalyst poisoning?
A
- when impurities bind to catalyst surface and block reactants from being absorbed
6
Q
what poisons the haber process?
A
-sulfur poisons the iron catalyst
7
Q
A
