Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← ScienceWhich consequence decreases reaction rate in fuel cells?
A)Catalyst surface poisoning reduces active sites✓
B)Increasing temperature enhances molecule kinetic energy
C)Higher pressures increase reactant concentration
D)Smaller molecules have lower activation energy
💡 Explanation
Catalyst poisoning lowers reaction rate through adsorption, which blocks available active sites because site availability decreases the effective area of the reaction. Therefore, poisoning will slow the reaction rate rather than promote it or change activation energy.
🏆 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 cooling Helium-4 near absolute zero?
- Which consequence results when water boils inside vacuum-sealed electronic instruments?
- Which outcome results when blood flow in a constricted artery exceeds a critical Reynolds number?
- Which consequence occurs when electrons face oxide barrier?
- Which consequence results when spacetime curvature increases near a gyroscope?
- Which outcome results when the energy of an incident electron matches a target atom's vacant electronic orbital?