Crash Course
Crash Course Chemistry #31: Buffers, the Acid Rain Slayer
Learn about buffers and their compositions, carbonate buffering systems in nature, acid rain, pH of buffers, and titration. Also see an experiment using indicators to showcase buffers. [11:41]
Khan Academy
Khan Academy: Solubility and Complex Ion Formation
Tutorials showing calculating the solubility of silver chloride in pure water and 3.0 M ammonia, and calculating new equilibrium constant to account for formation of complex ion. [14:50]