Which effect dominates when solid catalyst surface area decreases during a reaction operating at otherwise constant conditions?

💡 Explanation

When a solid catalyst's surface area decreases, fewer active sites are available to facilitate the reaction, causing a reduction in the reaction constant because the number of successful collisions between reactants and the catalyst is reduced. Therefore rate constant is reduced, rather than changes to activation energy, equilibrium, or order, which depend on other factors.

• Which mechanism causes increased synthesis rate when enzymes saturate?
• Which outcome reduces signal fidelity during waveguide propagation?
• Which risk increases when the impurity concentration rises excessively within a semiconductor crystal used within high-frequency electronics?
• Which outcome occurs when reactant concentration significantly exceeds enzyme concentration in enzymatic reaction?
• Which risk greatly increases following frost damage preventing grapevine bud development?
• Which event causes catalyst poisoning to decrease reaction velocity?