20 multiple-choice questions in College Board exam style. Each has four choices and a full explanation of why each option is right or wrong.
Never assume reaction order matches stoichiometric coefficients. Only an elementary step's molecularity gives the rate law directly — overall rate laws are determined from experimental data.
Find the rate-determining step before predicting the rate law. If it's the first step, the rate law comes straight from its reactants. If it's a later step, you need the steady-state approximation.
Remember catalysts change the pathway, not the energetics. ΔE (reactants to products) stays the same; only the activation energy and mechanism change.
Read the explanations even when you got it right. Each one teaches a small fact that often returns in a different form on the exam.