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← ScienceWhich outcome is observed when increasing the Arrhenius equation's pre-exponential factor on reaction rate?
A)Increased probability of effective molecular collisions✓
B)Reduction of required catalyst concentration
C)Shift in thermodynamic equilibrium constant
D)Decreased sensitivity to reactant concentrations
💡 Explanation
When the pre-exponential factor (A) of the Arrhenius equation increases, the frequency of molecular collisions with proper orientation rises, directly increasing the likelihood of effective collisions leading to product formation. Therefore, collision effectiveness increases, rather than changes in catalyst requirements, equilibrium, or concentration sensitivities which are governed by other factors.
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