Chemistry related

Question

Which statement most accurately describes the behavior of a catalyst?

(A)A catalyst increases the change of G of a reaction and hence the forward rate.

(B)A catalyst reduces the change of H of a reaction and hence the temperature needed to produce products.

(C)A catalyst reduces the activation energy for a reaction and increases the rate of a reaction.

(D)A catalyst increases the equilibrium constant and final product concentrations.

could you explain which option you chose and why?

Answer 1

Activation energy is the minimum energy required for a chemical reaction to proceed. A catalyst can lower the activation energy for a reaction by orienting the reacting particles in such a way that successful collisions are more likely. A catalyst can also reacting with the reactants to form an intermediate that requires lower energy to form the product.

Therefore, the correct choice is (C).