Qualatative Anlysis Essay

281 WordsMar 27, 20122 Pages
Qualitative analysis 1: Anions in Aqueous Solution Procedure: 1. Add 4 drops of reagent solution to a spot, after doing this add 4 drops of the anion solution. Stir solution 2. Record observations change of color, precipitate formation, and other changes. 3. Move onto next test if precipitate does not form. If precipitate forms add 2 more drops of the anion solution being formed. 4. If precipitate is still there add 3 drops of 3 M HNO3 (aq). 5. Keep the record of the information in tabular form as seen in the chemistry manual. Part 2: Unknowns 1. Record unknown code numbers in notebook. 2. Perform experiments with the unknowns with each of the four reagent chemicals. 3. Test precipitate with 3 M nitric acid. 4. Compare with earlier test to identify the anions 5. Keep the record of the information in tabular form as seen in the chemistry manual. Qualitative analysis 2: Cations in Aqueous Solution Procedure 1. Add 4 drops of Cation solution into a well of a spot plate. 2. If precipitate forms after addition of 4 drops of SO4, S2O3, or I add 2 more drops. 3. Stir and record observations Ammonia 1. Add 4 drops of Cation solution into a well of a spot plate. 2. Add 4 drops of .2M NH3 and record observations. 3. Add 4 drops of 6M NH3 after each addition record observations. Part 2: Unknowns 1. Record unknown code numbers in notebook. 2. Perform experiments with the unknowns with each of the four reagent chemicals. 3. Compare with earlier test to identify the anions 4. Keep the record of the information in tabular form as seen in the chemistry

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