Determination of the Hardness of Water - Student Laboratory Kit
By: The Flinn Staff
Item #: AP9091
With the Determination of the Hardness of Water Consumer Chemistry Laboratory Kit, students learn how to properly use pipets and burets. Students also perform stoichiometric calculations involving volume and molarity.
This item can only be shipped to schools, museums and science centers
Titrate metal ions found in tap water using the reagent ethylenediaminetetraacetic acid (EDTA). The end point is found using a dye called Eriochrome Black T (EBT), which also forms complexes with metal ions in solution. Students learn how to properly use pipets and burets and will perform stoichiometric calculations involving volume and molarity. Kit includes reproducible student procedure, complete Teacher Notes with sample data and answers to questions, and all necessary chemicals.
Complete for 24 students working in pairs.