Procedure 2: • You add cold HCI and notice a white precipitate. • You set the test tube in boiling water and you notice you still have precipitate. You decant the liquid into a different test tube and keep both Procedure 3: • You split the decanted solution in half, into two different test tubes • In the first half, you add potassium chromate into the solution. You notice a yellow precipitate • In the second half, you add sulfuric acid. You notice a white precipitate Procedure 4: • You add ammonia into the test tube. The test tube off-gasses • You then centrifuge the tube. You notice there is no precipitate • To the solution, you add nitric acid until the solution is acidic (which you test with blue litmus paper) • You notice a white precipitate Cations Present, Undetermined, or Absent: Pb: ? Hg: ? Ag: ?

Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Procedure 2:
• You add cold HCI and notice a white precipitate.
• You set the test tube in boiling water and you notice you still have precipitate. You
decant the liquid into a different test tube and keep both
Procedure 3:
• You split the decanted solution in half, into two different test tubes
• In the first half, you add potassium chromate into the solution. You notice a yellow
precipitate
• In the second half, you add sulfuric acid. You notice a white precipitate
Procedure 4:
• You add ammonia into the test tube. The test tube off-gasses
• You then centrifuge the tube. You notice there is no precipitate
• To the solution, you add nitric acid until the solution is acidic (which you test with
blue litmus paper)
• You notice a white precipitate
Cations Present, Undetermined, or Absent:
Pb: ?
Hg: ?
Ag: ?
Transcribed Image Text:Procedure 2: • You add cold HCI and notice a white precipitate. • You set the test tube in boiling water and you notice you still have precipitate. You decant the liquid into a different test tube and keep both Procedure 3: • You split the decanted solution in half, into two different test tubes • In the first half, you add potassium chromate into the solution. You notice a yellow precipitate • In the second half, you add sulfuric acid. You notice a white precipitate Procedure 4: • You add ammonia into the test tube. The test tube off-gasses • You then centrifuge the tube. You notice there is no precipitate • To the solution, you add nitric acid until the solution is acidic (which you test with blue litmus paper) • You notice a white precipitate Cations Present, Undetermined, or Absent: Pb: ? Hg: ? Ag: ?
Expert Solution
Step 1

When chemical reactions are performed in laboratories there is the formation of specific coloured compounds that indicates specific information about reactants. These coloured products are examined and the sample is analysed qualitatively to identify the metals present.

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