Answer: −Ea/R.
- A −Ea/R
- B Ea/R
- C −R/Ea
- D A
Correct answer: A. −Ea/R
Explanation: Taking logs of the Arrhenius equation gives ln k = ln A − Ea/RT, so the slope is −Ea/R.
First-order decay curve: concentration halves every t½, and that half-life is constant - a defining test for first-order kinetics.
Concept context
Study the speed of reactions and what affects it: concentration, temperature, and catalysts. Covers rate law, order of reaction, the Arrhenius equation, and reaction mechanisms step by step.