Answer: increase.
- A decrease
- B increase
- C stay the same
- D fall to zero
Correct answer: B. increase
Explanation: Higher temperature gives more molecules the activation energy and increases collision frequency, so the rate rises.
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.