Chemical transformations
Acid-base, oxidation-reduction, precipitation, complexation, equilibria. The major reaction families to master in high school.
- Lesson 0111 minComing soon
Acid-base: Brønsted model
Proton donor/acceptor, acid-base couples, water autoprotolysis. Relative strengths, Ka.
- Lesson 0211 minComing soon
pH and acid/base strength
Defining pH, the scale, computing pH of strong/weak acids. Predominance diagrams.
- Lesson 0312 min
Oxidation-reduction
Electron exchange, Ox/Red couples, redox equations. From oxidation number to galvanic cells.
- Lesson 0410 minComing soon
Precipitation reactions
Solubility product Ksp, precipitation conditions, precipitation titrations.
- Lesson 0510 minComing soon
Complexation reactions
Ligands, complex ions, formation constants. Iconic examples (copper-ammonia, iron-thiocyanate).
- Lesson 0611 minComing soon
Chemical equilibria
Reversible reaction, reaction quotient Q, equilibrium constant K. Evolution criterion.
- Lesson 0710 minComing soon
Le Chatelier's principle
How to perturb an equilibrium (concentration, T, P, adding a product). Industrial applications (Haber-Bosch).