AP Chemistry: Reaction Kinetics
Kinetics asks how fast a reaction goes and what changes that. This quiz covers determining a rate law from experimental data, overall reaction order, half-life for zero, first and second-order reactions, and the Arrhenius relationship.
A recurring theme: the rate law cannot be read off the balanced equation. It comes from experiment, and several questions here make that point directly.
Calculations were verified by hand; one answer key was corrected before publication.
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Sample questions3 of 12 shown
Q1
For the reaction 2A + B → products, experimental data shows that doubling [A] quadruples the rate, while doubling [B] has no effect on the rate. What is the rate law?
Q2
What is the overall reaction order for a rate law expressed as rate = k[X]²[Y]?
Q3
A radioactive isotope has a half-life of 10 years. After 30 years, what fraction of the original sample remains?
What This Quiz Covers
- Determining rate law from experimental data
- Overall reaction order
- Half-life in zero, first and second-order reactions
- Activation energy and the Arrhenius plot
- What the rate constant k depends on
- Elementary steps and reaction mechanisms
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