The reaction of H2(g) with C2H4(g) to form C2H6(g) is catalyzed by metallic platinum. Which statemen — Kinetics Chemistry Question
Question
The reaction of H2(g) with C2H4(g) to form C2H6(g) is catalyzed by metallic platinum. Which statement most accurately describes the impact of changing the catalyst in this reaction?
The rate of the reaction would not change if a greater mass of catalyst were used because the platinum is a solid so its concentration is a fixed number.
The rate of the reaction would increase if more finely divided platinum were used because the reaction depends on the surface area of the catalyst.
The ∆H° for the reaction would become more negative if a greater mass of catalyst were used because the catalyst adsorbs the reactants exothermically.
The ∆S° for the reaction would become more negative if more finely divided platinum were used because the catalyst absorbs gas-phase reactants to form ordered surface species.