Answer: Change in concentration divided by time.
- A Change in concentration divided by time
- B Slope of the tangent to the curve
- C Rate constant times the temperature
- D Product of the reactant concentrations
Correct answer: A. Change in concentration divided by time
Explanation: Average rate is the change in concentration of a reactant or product divided by the time interval over which the change occurs.
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.