Answer: 8 times.
- A 4 times
- B 8 times
- C 6 times
- D 16 times
Correct answer: B. 8 times
Explanation: The rate rises by the temperature coefficient for each 10 degree rise, so for 30 degrees the factor is 2<sup>3</sup> = 8 times.
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.