The pH of the reaction medium can impact the catalytic activity in several ways. For example:
Protonation/Deprotonation: The pH can change the protonation state of the catalyst and substrates, affecting their reactivity. Solubility: The solubility of certain catalysts and substrates can be pH-dependent, influencing the reaction rate. Stability: Catalysts can be more or less stable under different pH conditions, affecting their longevity and efficiency.