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← ScienceWhich risk increases when catalyst particle size increases?
A)Lower surface area per mass✓
B)Increased internal pore diffusion
C)Faster overall reaction velocity
D)Higher rate of catalyst poisoning
💡 Explanation
Larger catalyst particles reduce the overall surface area, because fewer active sites are available; therefore, lower surface area reduces reaction rate rather than increases it and is a dominating effect rather than any slight change in diffusion.
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