Chemistry Matching Question for Qualatative Analysis group 3 Match up the follow

Question

Chemistry Matching Question for Qualatative Analysis group 3

Match up the following questions with the most appropriate answer.

Each answer will be used only once.

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A. to form insoluble sulfides and hydroxides

B. Only Zn2+ (aq), Al3+ (aq) and/or Mn2+ (aq) ions

C. Al(OH)3 (s) will precipitate out leaving Zn(NH3)4 ]2+ (aq) in solution

D. whose hydroxides are amphoteric

E. 3 M HNO3

F. do not form ions whose hydroxides are amphoteric

G. Fe(OH)3 (s) will precipitate out leaving [Al(OH)4 ]1- (aq) in solution

. Under the conditions used to precipitate out group III ions , (NH4 )2 S containing excess NH4+ , you can expect group I and II ions to

3. aluminum and zinc form ions

6. According to your flowchart, if excess NH3 (aq) is added:

A. to form insoluble sulfides and hydroxides

B. Only Zn2+ (aq), Al3+ (aq) and/or Mn2+ (aq) ions

C. Al(OH)3 (s) will precipitate out leaving Zn(NH3)4 ]2+ (aq) in solution

D. whose hydroxides are amphoteric

E. 3 M HNO3

F. do not form ions whose hydroxides are amphoteric

G. Fe(OH)3 (s) will precipitate out leaving [Al(OH)4 ]1- (aq) in solution

Explanation / Answer

1 - A

2 - B

3 - D

4 - F

5 - G

6 - C

7 - E

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