Answer: Experimental data.
- A Balanced equation alone
- B Stoichiometry only
- C Experimental data
- D Activation energy
Correct answer: C. Experimental data
Explanation: Rate laws must be determined experimentally; they cannot be predicted from stoichiometry.
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.