Ligand Substitution And Precipitation

Question 1

Copper (II) ions and Ammonia

Answer 1

• Precipitate reactions
• Pale blue solution turns to dark blue precipitate
• Cu(OH)2

Question 2

Copper (II) ions with excess ammonia

Answer 2

• Ligand substitution
• Pale blue solution turns to Dark blue solution
• [Cu(NH3)4(H20)2]2+

Question 3

Copper (II) ions with HCl

Answer 3

• Ligand substitution
• Pale blue solution turns yellow solution
• [CuCl4)2-

Question 4

Copper (II) ions with NaOH

Answer 4

• Precipitate reaction
• Pale blue solution turns Dark blue solution
• Cu(OH)2

Question 5

Chromium (III) ions with ammonia

Answer 5

• Precipitate reaction
• Violet solution (looks green) turns Grey-Green Precipitate
• Cr(OH)3

Question 6

Chromium (III) ions with excess ammonia

Answer 6

• Ligand substitution
• Violet (looks green) solution turns purple solution
• [Cr(NH3)6]3+

Question 7

Chromium (III) ions with NaOH

Answer 7

• Precipitate reaction
• Violet (Looks green) solution with Grey-green Precipitate
• Cr(OH)3

Question 8

Iron (II) ions with NaOH

Answer 8

• Precipitate reaction
• Pale green solution turns Dark green Precipitate
• Fe(OH)2

Question 9

Iron (III) ions with NaOH

Answer 9

• Precipitate reaction
• Yellow solution turns Orange Precipitate
• Fe(OH)3

Question 10

Manganate (II) ions with NaOH

Answer 10

• Precipitate reaction
• Pale pink solution turns Light browns Precipitate
• Mn(OH)2