Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter4: Stoichiometry: Quantitative Information About Chemical Reactions
Section: Chapter Questions
Problem 139SCQ: Two students titrate different samples of the same solution of HCl using 0.100 M NaOH solution and...
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Transcribed Image Text:B. Test for Anions
1. Test for Halides (CI-¹)
a. Put 2 mL sodium chloride and potassium chloride solution in separate test
tubes.
b. Add 5 drops of 6M nitric acid, followed by 5 drops of silver nitrate solution.
2. Test for Sulfates (SO.²)
a. Put 1 tsp of calcium sulfate solution in a test tube.
b. Add 2 mL of 6M hydrochloric acid then mix.
c. Add 10 drops of barium chloride solution and mix. Record your observation.
3. Test for Carbonates (CO²)
a. Put 1 tsp of calcium carbonate in a test tube.
b. Carefully observe the test tube as you add 2 mL of 6M hydrochloric acid.
Record your observations.
4. Test for Phosphates (PO³)
a. Put 1 tsp of ammonium phosphate solution in a test tube.
b. Add 1 mL of 6M nitric acid and 10 drops of ammonium molybdate solution to
the test tube and mix.
c.
Place the test tube in a boiling water and heat for 5 minutes.
d. Allow the test tube to cool in a test tube rack for 10 minutes. Record your
observation.
5. Test for Oxide (0²)
a. Add 5 drops of 3M sulfuric acid and 5 drops of potassium thiocyanate
solution to a test tube containing 1mL of calcium oxide.
b. Flick gently to mix. Record your observations.
Transcribed Image Text:3. Test for Anions
Halides
Sulfates
Carbonates
Phosphates
Oxides
Anion
Observation
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