Apentix/AP Chemistry/Unit 5: Kinetics/Question

AP Chemistryhardmcq1 pt

A reaction's experimental rate law is rate = k[A], but the balanced equation is 2A → products. What can you conclude?

A.The reaction proceeds through a mechanism

B.The reaction is a single bimolecular step

C.The balanced equation is wrong

D.The rate law is impossible

Explanation

Core Concept

A single bimolecular step would demand rate = k[A]². The observed first order means the reaction cannot be one 2A collision — it must run through multiple elementary steps.

Correct Answer

AThe reaction proceeds through a mechanism

More Unit 5: Kinetics practice questions

Try a random question →

Practice more AP Chemistry questions with full explanations

Practice Unit 5: Kinetics Questions →