AP Chemistry Unit 5 Practice
AP Chemistry · Unit 5
Catch up at your own pace.
Choose one topic for six questions, or Mixed review for all 66. Read the feedback after each answer.
No timer. Use scratch paper and a calculator. The rate-law reference is below.
Your set is complete
Results by topic
Reference
Integrated rate laws
At constant temperature and volume, for disappearance of a single reactant A:
- Zero order: [A] = [A]0 − kt. Linear plot: [A] versus time; slope −k.
- First order: ln[A] = ln[A]0 − kt; [A] = [A]0e−kt. Linear plot: ln[A] versus time; slope −k.
- Second order: 1/[A] = 1/[A]0 + kt. Linear plot: 1/[A] versus time; slope +k.
First-order half-life: t½ = 0.693/k.
Rate law and units of k
rate = k[A]m[B]n. Overall order = m + n.
For concentration in M and time in s: [k] = M1−(m+n) s−1.
- Zero order: M s−1
- First order: s−1
- Second order: M−1 s−1
The rate constant depends on temperature. Orders come from experiments for an overall reaction; coefficients give orders only for an elementary reaction.
Keep extra digits in your work and round only the final answer. Energy-profile levels are schematic model values.
Aligned practice for AP Chemistry CED topics 5.1 to 5.11. Original ZornScience questions.
About this activity
Review AP Chemistry Unit 5, Kinetics, with 66 original questions. Each answer gets an explanation right away, and your score is broken down by topic.
Related lessons
- Unit 5: KineticsAP Chemistry