The rate constant of a chemical reaction decreases by decreasing the____________________?
Correct answer: C. Temperature
- A. Pressure
- B. Concentration of reactants
- C. Temperature
- D. Duration of reaction
Explanation
The Arrhenius equation, k = A exp(−E_a/RT), shows that increasing temperature raises the rate constant, so lowering temperature decreases it. Concentration and reaction duration affect reaction rate or conversion, not the intrinsic rate constant.
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