The catalyst in a first order chemical reaction changes the_________________?
Correct answer: D. Activation energy
- A. Equilibrium constant
- B. Heat of reaction
- C. Heat of formation of the product
- D. Activation energy
Explanation
A catalyst provides an alternative reaction pathway with a lower activation energy, thereby increasing the rate in both directions. It does not change the equilibrium constant, heat of reaction or heats of formation.
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