Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← ScienceWhich consequence results when a catalyst degrades on a solid support, reducing surface reaction sites?
A)Observed rate constant decreases.✓
B)Activation energy remains unchanged.
C)Equilibrium constant changes significantly.
D)Gas diffusion to surface speeds up.
💡 Explanation
The observed rate constant decreases because fewer active sites are physically available for the catalyzed reaction according to the Arrhenius equation involving the rate constant; therefore, the reaction slows, rather than alters equilibria or 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 mechanism hinders electron emission from a fullerene?
- Which consequence results when a batch reactor's impeller fails, causing incomplete mixing that changes reagent concentration near the catalyst?
- Which consequence results when extreme compaction distorts spacetime?
- Which mechanism causes zero resistance when niobium-titanium wire is cooled to superconducting temperatures in a tokamak?
- Which mechanism causes induced current when a toroidal coil's magnetic resistance is abruptly modified?
- Which risk increases significantly when photoactive molecule degradation alters frontier orbitals?
