Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← ScienceWhich outcome occurs when lowering temperatures drastically during platinum-catalyzed ammonia oxidation?
A)Decreased chemisorption reaction intermediates production ✓
B)Increased diffusion rate toward catalyst
C)More exothermic byproduct formation favored
D)Ammonia decomposition rate exceeds oxidation
💡 Explanation
Chemisorption decreases at lower temperatures because the **Arrhenius equation** dictates an exponential relationship between the rate constant and temperature. Therefore, chemisorption decreases, rather than other options that require higher temperatures or diffusion, causing a reduced catalytic activity.
🏆 Up to £1,000 monthly prize pool
Ready for the live challenge? Join the next global round now.
*Terms apply. Skill-based competition.
Related Questions
Browse Science →- Which outcome occurs when U-235 enrichment stops for MOX fuel?
- Which consequence results when dissolved polymer chains break within turbulent flow?
- Which risk increases when a pulsed power magnet collapses?
- Which structural change occurs in a protein when a disulfide bridge forms between two cysteine residues?
- Which risk increases greatly when a radar system emits sidelobe energy during propagation?
- Which effect results when heat exchanger tubes within a chemical reactor's cooling system experience fouling?
