Experimentium is a collection of General Chemistry lab experiments and associated prompts developed by Drs. Eszter Trufan and Elene Bouhoutsos-Brown. Most of the experiments can be performed both in the laboratory and at home, if a student kit is provided. The cost of the kits is estimated at under $50 with most items being reusable.

This resource is a laboratory experiment meant to accompany Chemistry Atoms First 2e Chapter 14https://openstax.org/books/chemistry-atoms-first-2e/pages/14-introductionThis activity incorporates the following laboratory skills: Preparing solutions with volumetric pipetsMeasuring absorbance spectrophotometricallyMeasuring pH with a pH meterGenerating a linear graphStudents should be familiar with the following concepts: Using the dilution formula to calculate concentrationGenerating the equation of a line by linear regressionUsing the equation of a line to solve for "x" given y-valuescalculating hydronium ion concentration from pHcalculating K from equilibrium concentrationscalculating deviation, calculating % error and interpreting quality of results.   

This resource is a virtual LeChatlier's lab.  Pictures of systems at equilibrium are presented, then pictures are given after different stresses are applied.  A buffer system with pH data is included.  This resource is designed to accompany Chemistry Atoms First 2e section 13.3 Shifting Equilibriahttps://openstax.org/books/chemistry-atoms-first-2e/pages/13-3-shifting-equilibria-le-chateliers-principle