Answer: Independent of concentration.
- A Proportional to concentration
- B Inversely proportional to concentration
- C Independent of concentration
- D Proportional to concentration squared
Correct answer: C. Independent of concentration
Explanation: For zero-order reactions, rate = k; the rate is constant regardless of reactant concentration.
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.