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Which phenomenon causes decreased reaction duration when surface area increases?

A)Increased collision frequency
B)Lower activation energy
C)Altered equilibrium constants
D)Higher reactant concentration

💡 Explanation

Increased surface area provides more area for reactant molecules to collide via collision theory, therefore reaction duration decreases, because the *collision frequency* is more important for heterogenous catalysis, rather than effects on equilibrium or activation energy.

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