AP Chemistryeasymcq1 pt
A mechanism contains species X that is produced in step 1 and consumed in step 2. What is X?
A.An intermediate
B.A catalyst
C.A transition state
D.A reactant
Explanation
Core Concept
Intermediates are created then destroyed within the mechanism and never appear in the overall equation. They are real but short-lived species.
Correct Answer
AAn intermediate
More Unit 5: Kinetics practice questions
- mediumA first-order decomposition has a half-life of 12 minutes. What percentage of the original reactant concentration remains after 36 minutes?
- hardWhat is the overall order of a reaction with rate = k[A]⁰[B]²?
- hardWhich energy-profile feature distinguishes a catalyzed pathway from an uncatalyzed one?
- hardAn experiment tracks [A] over time and finds the half-life doubles as [A]₀ halves. What is the reaction order?
- hardWhich reaction is expected to be fastest at room temperature?
Practice more AP Chemistry questions with full explanations
Practice Unit 5: Kinetics Questions →