Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← ScienceWhich outcome increases when platinum's surface area increases?
A)Catalytic reaction turnover rate✓
B)Activation energy barrier height
C)Product equilibrium constant value
D)Molecular diffusion boundary thickness
💡 Explanation
Increasing platinum surface area raises the reaction rate because it increases the number of active sites accessible for reactant adsorption via heterogeneous catalysis. Therefore, the turnover rate increases, rather than the equilibrium constant shifting or barrier heights changing under the same conditions.
🏆 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 effect reduces single-mode fiber optic transmission rates when source coherence degrades?
- Which risk increases when quenching steel too rapidly past the nose of its Time-Temperature-Transformation diagram?
- Which risk increases when gravitational acceleration approaches black hole conditions?
- Which mechanism causes vortex shedding when Reynolds number increases?
- Which characteristic determines the maximum theoretical efficiency of a Carnot heat engine cycle?
- Which mechanism impedes ion mobility when solid oxide fuel cell (SOFC) temperature is reduced significantly?
