Question

Which of the followings is/are incorrect about catalyst?

• A. Catalyst alter the position of equilibrium.
  
• B. A small amount of catalyst is required to catalyse a reaction.
• C. Catalyst does not initiate any reaction.
• D. It does not alter the Gibbs energy $\left(\Delta G\right)$, of a reaction.

Answer 1

The correct option is A Catalyst alter the position of equilibrium.


General characteristics of catalyst:
1. Catalyst does not initiate any reaction. It only increase the rate of the reaction.
2. Only a small amount of catalyst is required to catalyse a large amount of reactants.
3. A catalyst does not alter the position of equilibrium. It only reduces the time taken to reach the equilibrium.
4. It does not alter the Gibbs energy $\left(\Delta G\right)$, of a reaction. Thus, only spontaneous reaction are catalysed and not the non-spontaneous ones.

Hence, statements (a) is incorrect.