- A catalyst is a substance which can change the rate of reaction.
- There are a few things you need to know about catalyst:
- Chemically, the catalyst remain unchanged during a reaction.
- Catalyst does not change the quantity of products.
- Catalyst is specific, which means different chemical reaction may have different cataly
- Just a small amount needed to achieve big increase in rate of reaction.
- More amount of catalyst used can further increase the rate of reaction.
- Catalyst in powder form can further increase the rate of reaction.
- Catalyst may undergo physical change in a reaction.
List of Reactions and the Catalyst
| Decomposition of hydrogen peroxide:
2H2O2 → 2H2O + O2
|Manganese(IV) oxide, MnO2
Lead(II) oxide, PbO
Lead(IV) oxide, PbO2
| Reaction between Zinc and Hydrochloric Acid:
Zn + 2HCl → ZnCl2 + H2
|Manganese (IV) oxide, MnO2
Copper (II) oxide, CuO
Zinc Oxide, ZnO
Silicon (IV) oxide, SiO2
| Decomposition of Potassium Chlorate (V):
2KClO3 + 2KCl → 3O2
| Copper (II) sulphate, CuSO4
Copper (II) chloride, CuCl2
Copper (II) nitrate, Cu(NO3)2
| Haber Process
N2 + 3H2 → 2NH3
| Contact Process
2SO2 + O2 → 2SO3
|Vanadium(V) oxide, V2O5|
| Ostwald Process|
4NH3(g) + 5O2(g) 4NO(g) + 6H2O(1)