RP 11 - Identifying transition metal ions

Question 1

How do you transition metals undergo precipitation reaction?

Answer 1

They react with hydroxide irons to form a metal hydroxide precipitate

Question 2

What can be reacted with transition metals for a precipitation reaction to occur?

Answer 2

• Aqueous sodium hydroxide
• Ammonia

Question 3

What is the first test that can be carried out to identify transition metal ion?

Answer 3

1) Add 10 drops of each solution (Q, R, S) in a test tube. Add sodium hydroxide solution drop by drop to each until in excess. Record any observations.
2) Stand in a beaker of hot water for 10 minutes.
3) Compare the colour changes to the known colour changes of transition metal ions.

Question 4

What is the second test that can be carried out to identified transition metal ion?

Answer 4

1) Add about 10 drops of each solution into a different test tube with sodium carbonate shake and record observations.
2) Compare the colour changes to the known colour changes of the transition metal ions.