IB Chemistry R2.2 Rate of Change
R2.2

How Fast? The Rate of Chemical Change

Collision theory, factors affecting rate, and rate equations.

R2.2.1 Collision Theory & Rate

What makes reactions go faster?

R2.2.2 Factors Affecting Rate

Temperature, concentration, catalysts, surface area.

R2.2.3 Measuring Rate

Experimental methods and rate-time graphs.

R2.2.4 Rate Equations & Arrhenius (HL)

Rate = k[A]ᵐ[B]ⁿ and the Arrhenius equation.

R2.2.5 Catalysts

Energy profiles, Maxwell-Boltzmann, and how catalysts work.

HL EXTENSION

R2.2.6 Rate Expressions

The rate law, the rate constant k, and its units.

R2.2.7 Reaction Orders

Zero, first, and second order effects on rate.

R2.2.8 Determining Orders

Method of initial rates from experimental data.

R2.2.9 [A]-Time Graphs

Concentration-time curves for each order.

R2.2.10 Rate-[A] Graphs

Rate-concentration plots and common mistakes.

R2.2.11 Half-Life

Constant half-life for first-order reactions.

R2.2.12 Arrhenius Equation

k = Ae^(-Ea/RT), Arrhenius plots, finding Ea.

R2.2.13 Reaction Mechanisms

RDS, molecularity, and relating mechanisms to rate laws.

← R2.1 Amount of ChangeNext: R2.3 Extent of Change →