AP Chemistryeasymcq1 pt
Which quantity increases when a catalyst is added to a reaction mixture?
A.The fraction of effective collisions
B.The equilibrium constant
C.The activation energy
D.The enthalpy of reaction
Explanation
Core Concept
Lower Ea means more collisions clear the barrier, so a bigger share of collisions lead to products — the rate rises without changing ΔH or K.
Correct Answer
AThe fraction of effective collisions
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