Use the flow charts on the previous page to answer the following questions. In each question, a test is carried out to determine the presence or absence of several ions. Only those listed may be present. State if the tests indicate if each ion is present, absent, or undetermined. 1. Test for Ag", Cu²*, Fe³ Some 6 M HCl is added to a solution that may contain the three ions. A white precipitate forms. Ions present: Ions absent: Ions undetermined: 2. Test for Cu²*, Ag*, and Zn²* Some 6 M HCI is added to a solution that may contain the three ions. No precipitate forms. The addition of 6 M NaOH until the solution is basic results in no formation of precipitate. Ions present: Ions absent: Ions undetermined: 3. Test for Cu*, Fe*, and Zn²* 6 M NAOH is added to a clear solution that may contain the three ions until the solution is basic. A dark precipitate forms. The precipitate totally dissolves in 6 M H2SO4. The addition of 6 M NH3 to this acidic solution until it is basic results in a clear solution containing a dark precipitate. The resulting dark precipitate completely dissolves in 6 M H2SO4. Ions present: Ions absent: Ions undetermined:
Use the flow charts on the previous page to answer the following questions. In each question, a test is carried out to determine the presence or absence of several ions. Only those listed may be present. State if the tests indicate if each ion is present, absent, or undetermined. 1. Test for Ag", Cu²*, Fe³ Some 6 M HCl is added to a solution that may contain the three ions. A white precipitate forms. Ions present: Ions absent: Ions undetermined: 2. Test for Cu²*, Ag*, and Zn²* Some 6 M HCI is added to a solution that may contain the three ions. No precipitate forms. The addition of 6 M NaOH until the solution is basic results in no formation of precipitate. Ions present: Ions absent: Ions undetermined: 3. Test for Cu*, Fe*, and Zn²* 6 M NAOH is added to a clear solution that may contain the three ions until the solution is basic. A dark precipitate forms. The precipitate totally dissolves in 6 M H2SO4. The addition of 6 M NH3 to this acidic solution until it is basic results in a clear solution containing a dark precipitate. The resulting dark precipitate completely dissolves in 6 M H2SO4. Ions present: Ions absent: Ions undetermined:
Chapter15: Acid-base Equilibria
Section: Chapter Questions
Problem 13Q: An acid is titrated with NaOH. The following beakers are illustrations of the contents of the beaker...
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