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Work in Pairs on this experiment.
Part I. Qualitative Analysis – Analysis of a Known Solution
1. All glassware must be kept scrupulously clean. Each reagent/test solution should
have its own dropper.
2. Start a hot water bath in a 400mL beaker (1/3-full of water).
3. Set aside another beaker to serve as a waste container.
4. Make a 3% H2O2 solution. (Dilute the 30% H2O2 stock solution by a factor of 10
using deionized H2O.) Store this solution in a clean test tube and supply with a
5. Obtain about 5mL of each of the following: 6M NaOH and 6M HNO3. Store
these in clean test tubes and supply each with a plastic pipet.
Making the Known Solution
1. To make your known solution, combine 1 mL of each of the following metal
nitrate solutions in a round-bottom test tube: Ca2+, Co2+, Cr3+, Fe3+, K+, Mn2+,
2. Be sure and note the colors of each individual solution in your Lab Notebook.
Initial Separation of the Cr3+, Fe3+, K+, Mn2+, Zn2+ Ions
1. First transfer 1 mL of your cation so...
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- Spring '07