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Which outcome occurs when a catalyst’s active site weakens the bond undergoing scission?

A)Reaction energy barrier is lowered
B)Enthalpy increases during the process
C)Reaction order becomes zero
D)Entropy of activation is diminished

💡 Explanation

The reaction rate increases because a lower transition state energy is caused by stabilization during the reaction via the mechanism of transition state stabilization. Therefore, the energy barrier decreases, rather than enthalpy changing or affecting reaction order.

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