Answer: zero order.
- A first order
- B zero order
- C second order
- D third order
Correct answer: B. zero order
Explanation: A zero-order reaction proceeds at a constant rate 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.