This resource contains three videos covering solubility, precipitation and complex ion equilibria.  These videos correspond to Chemistry Atoms First 2e, Sections 15.1 and 15.2https://openstax.org/books/chemistry-atoms-first-2e/pages/15-1-precipitation-and-dissolutionhttps://openstax.org/books/chemistry-atoms-first-2e/pages/15-2-lewis-acids-and-bases