Role of Catalyst:
- A catalyst speeds up both the forward and reverse reactions equally.
- It lowers the activation energy for both reactions, allowing equilibrium to be reached more quickly.
Effect on Equilibrium Position:
- A catalyst does not change the position of equilibrium or the value of the equilibrium constant (Kc).
- It only reduces the time required to achieve equilibrium.
Example:
In the Haber process:
An iron catalyst is used to accelerate the reaction without altering the equilibrium position.