What effect does a catalyst have on the reaction A2 plus B2 equals 2AB?

A catalyst speeds up the reaction A2 + B2 → 2AB by lowering the activation energy required for the reaction to proceed. It provides an alternative reaction pathway, allowing the reactants to convert to products more efficiently without being consumed in the process. While the catalyst increases the rate of reaction, it does not alter the equilibrium position or the overall amount of products formed.