R: Reactivity
Master IB Chemistry R: Reactivity with notes created by examiners and strictly aligned with the syllabus.
R1.1
Measuring enthalpy changes
Heat versus temperature, Endothermic and exothermic change, Energy profiles, Calorimetry
R1.2
Energy cycles in reactions
Bond enthalpy, Hess’s law, combustion and formation data, Born–Haber cycles
R1.3
Energy from fuels
Combustion, incomplete combustion, fossil fuels, biofuels, fuel cells
R1.4
Entropy and spontaneity (AHL)
Entropy, Gibbs energy, temperature dependence, equilibrium
R2.1
How much? The amount of chemical change
Balanced equations, Mole ratios, Limiting reactants, Yield, Atom economy
R2.2
How fast? The rate of chemical change
Reaction rate, collision theory, activation energy, catalysts, mechanisms, rate equations, Arrhenius equation
R2.3
How far? The extent of chemical change
Dynamic equilibrium, Equilibrium constant, Le Châtelier's principle, Reaction quotient, Gibbs energy
R3.1
Proton transfer reactions
Brønsted–Lowry theory, pH and pOH, neutralization, titration curves, weak acid equilibria, indicators, buffers
R3.2
Electron transfer reactions
Oxidation states, Half-equations, Electrochemical cells, Electrolysis, Organic redox
R3.3
Hydrogen sharing reactions
Radicals, homolytic fission, fish-hook arrows, chain reactions, radical substitution
R3.4
Electron-pair sharing reactions
Nucleophiles, Electrophiles, Heterolytic fission, Lewis acids and bases, Substitution, Addition, Benzene
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