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Chemistry

This free online chemistry course teaches everything you need to know to succeed in chemistry. The tutorials cover everything from converting between Ka and pKa to acid/base titrations to the very basics of stoichiometry. The course consists of 33 tutorials which cover the material of a typical first year general chemistry course at the university level.

In order to gain a comprehensive understanding of the subject, you should start at the top and work your way down the list. That way you will start learning the most basic concepts first and build off of those as you progress through the course.
Chemistry

Stoichiometry

1. Simple stoichiometry example #1: combustion
2. Simple stoichiometry example #2: excess of one reactant
3. Simple stoichiometry example #3: how much of a reactant do you need
4. Using stoichiometry to determine the limiting reactant
5. Limiting reactant problem: what is the maximum yield that can be produced
6. Percentage yield vs. theoretical yield vs. actual yield
7. Solution stoichiometry example problem


Ideal Gas Law

8. Ideal gas problem #1: volume and pressure change
9. Ideal gas problem #2: volume and temperature change
10. Using ideal gas law to find the mass of a gas sample
11. Partial pressure explained
12. How to calculate partial pressure
13. Using the ideal gas law under STP conditions


Chemical Half-life

14. Determine the half-life of a zero order reaction
15. Determine the half-life of a first order reaction
16. Determine the half-life of a second order reaction

Chemical Equilibrium

17. How to find equilibrium concentrations using an ICE table
18. How to find the molar solubility of a compound
19. Calculate solubility of a compound in a common ion solution


Acid and Base Buffers

20. Why Kw=KaKb is true and makes sense
21. How to convert between Ka and pKa (or Kb and pKb)
22. How to calculate the pH of a buffer solution (ICE table)
23. How to calculate the pH of a buffer solution (Henderson Hasselbalch Equation)
24. Calculate percent ionization of a weak acid or base
25. Find the pH of a buffer solution when given molarity and volume of reactants

Acid and Base Titrations

26. Strong acid/strong base titration: pH before experiment
27. Strong acid/strong base titration: pH before equivalence point
28. Strong acid/strong base titration: pH at equivalence point
29. Strong acid/strong base titration: pH after equivalence point


30. Weak acid/strong base titration: pH before experiment
31. Weak acid/strong base titration: pH before equivalence point
32. Weak acid/strong base titration: pH at equivalence point
33. Weak acid/strong base titration: pH after equivalence point
​

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