Easily distinguish solutions of iron(II) from iron(III) ions by performing redox reactions between iron’s two oxidation states. Discover why iron(III) is the more stable of the two states. Simply add various complex ions to solutions of iron(II) or iron(III) and observe the formation of the Prussian blue precipitate or a deep blood-red complex, the confirming test for iron(III)! Students will gain practice in determining oxidation numbers and use that information to test for the presence of iron(II) or iron(III) in an unknown iron solution.
Complete for 30 students working in pairs.
Individual Flinn blended Learning Solution Kits include experiment supplies and 1 year of digital content access to one lab for 30 users. Digital features include:
- Anytime, anywhere digital access to prelab, technique and summary videos that help students focus on understanding core chemical concepts and progress through experiments independently.
- Digital procedures optimized to work, with embedded assessments and real sample data and enough materials for 24–30 students working in small groups to complete each experiment
- Unique takes on core chemistry concepts and clear connections to the things students experience in their everyday lives.
- Virtual reality simulations that place students “inside the beaker” to connect the atomic and macroscopic scales and browser-based simulations that allow students to generate digital emission spectra and pH indicator tables.
- Built-in safety training—videos and assessments on pre-lab safety, proper PPE, safety equipment, procedure safety, chemical disposal, hazard recognition and emergency response.