Test For Cations ( Aqueous Ammonia )

Question 1

What do u get after adding aqueous ammonia in ammonium and in excess aqueous ammonia.

Answer 1

No reaction (no white precipitate)

Question 2

What do u get after adding aqueous ammonia in calcium and in excess aqueous ammonia.

Answer 2

No precipitate.

Question 3

What do u get after adding aqueous ammonia in copper(ll) and in excess aqueous ammonia.

Answer 3

A light blue precipitate which is soluble in excess aqueous ammonia giving a dark blue solution.

Question 4

What do u get after adding aqueous ammonia in iron(ll) and in excess aqueous ammonia.

Answer 4

A green precipitate which is insoluble in excess aqueous ammonia.

Question 5

What do u get after adding aqueous ammonia in iron(lll) and in excess aqueous ammonia.

Answer 5

A reddish-brown precipitate which is insoluble in excess aqueous ammonia.

Question 6

What do u get after adding aqueous ammonia in lead(ll) and in excess aqueous ammonia.

Answer 6

A white precipitate which is insoluble in excess aqueous ammonia*

Question 7

What do u get after adding aqueous ammonia in zinc and in excess aqueous ammonia.

Answer 7

A white precipitate which is soluble in excess aqueous ammonia giving a colourless solution.