Curated OER
1999 U.S. National Chemistry Olympiad Part II
A variety of topics including reaction rates, combustion reactions, periodic trends, and ionization reactions are included in this exam. Test takers also practice calculating empirical and molecular formulas of compounds.
Curated OER
2000 U.S. National Chemistry Olympiad Part II
In this chemistry olympiad problem solving learning exercise, chemistry pupils solve eight problems on a variety of topics including periodic trends, phase changes, ionization reactions, catalysts and titrations.
Khan Academy
Khan Academy: Weak Acid Base Equilibria
Learn about weak acid and base ionization reactions and the related equilibrium constants, Ka and Kb. Relate Ka and Kb to pH, and calculate percent dissociation.