For the reaction , adding a catalyst decreases the activation energy by . How does this impact the o — Reaction Mechanism Chemistry Question
Question
For the reaction $A + B \rightarrow C$, adding a catalyst decreases the activation energy by $20 \text{ kJ/mol}$. How does this impact the overall enthalpy ($\Delta H$) of the reaction?
Answer: D
💡 Solution & Explanation
A positive catalyst provides an alternative pathway with a lower energy barrier ($E_a$) but does not alter the absolute potential energies of the reactants or products, thus $\Delta H$ remains constant.
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