IB Chemistry SL
Reactivity 2
IB Chemistry SL lessons and exam-style practice covering stoichiometry, reaction rates and equilibrium.
Lessons in this unit
Work through the topics in order.
R-2.1.1 Balancing chemical equations
Video lesson, practice questions, and resources.
R-2.1.2 Equations and ratio calculations
IB Chemistry SL lesson covering mole ratios and calculations involving reacting masses, volumes and solution concentrations.
R-2.1.3 Limiting reactant and theoretical yield
IB Chemistry SL lesson covering limiting and excess reactants, theoretical yield and experimental yield.
R-2.1.4 Percentage yield
IB Chemistry SL lesson covering theoretical and experimental yield, limiting reactants and percentage yield calculations.
R-2.1.5 Atom economy
IB Chemistry SL lesson covering atom economy, stoichiometric calculations and the relationship between atom economy and industrial waste.
R-2.2.1 Rate of reaction
IB Chemistry SL lesson covering rates of reaction and calculations from concentration, volume or mass against time graphs.
R-2.2.2 & 2.2.3 Collision theory and factors affecting rates
IB Chemistry SL lesson covering collision theory and the effects of pressure, concentration, surface area, temperature and catalysts on reaction rate.
R-2.2.4 & 2.2.5 Activation energy and catalysts
IB Chemistry SL lesson covering activation energy, catalysts, Maxwell–Boltzmann distributions and alternative reaction pathways.
R-2.3.1 Dynamic equilibrium
IB Chemistry SL lesson covering dynamic equilibrium, closed systems and the characteristics of physical and chemical systems at equilibrium.
R-2.3.2 & 2.3.3 Equilibrium constant and interpretation
IB Chemistry SL lesson covering equilibrium constant expressions, the magnitude of K, temperature dependence and reverse reactions.
R-2.3.4 Les Chatellier principle
IB Chemistry SL lesson covering Le Châtelier’s principle and the effects of concentration, temperature and pressure on equilibrium.
Reactivity 2
IB Chemistry SL lessons and exam-style practice covering stoichiometry, reaction rates and equilibrium.