Ligand Substitution precipitations

Question 1

What are the observations for Cu2+ with NaOH?

Answer 1

Blue solution reacts to form a blue precipitate

Insoluble in excess sodium hydroxide

Question 2

What ligand substitution is this statement describing? “Blue solution reacts to form a blue precipitate”

Answer 2

Copper(II) with Sodium Hydroxide

Question 3

What are the observations for Fe2+ with NaOH?

Answer 3

Pale green solution reacts to form a green precipitate of iron(ii)

Insoluble in excess NaOH but turns brown in air

Question 4

What ligand substitution is this statement describing? “Pale green solution reacts to form a green precipitate”

Answer 4

Iron(II) with sodium hydroxide

Question 5

What are the observations for Fe3+ with NaOH

Answer 5

Pale yellow solution reacts to form an orange-brown precipitate

Insoluble in excess sodium hydroxide

Question 6

What ligand substitution is this statement describing? “Pale yellow solution reacts to form an orange-brown precipitate”

Answer 6

Iron(III) with sodium hydroxide

Question 7

What are the observations for Mn2+ with NaOH?

Answer 7

Pale pink solution reacts to form a light brown precipitate of manganese(II) hydroxide which darkens in air

Insoluble in excess sodium hydroxide

Question 8

What ligand substitution is this statement describing? “Pale pink solution reacts to form a light brown precipitate”

Answer 8

Manganese(II) with sodium hydroxide

Question 9

What are the observations with Cr3+ with NaOH?

Answer 9

Violet solution reacts to form a grey-green precipitate

In excess NaOH forms a dark green solution

Question 10

What ligand substitution is this statement describing? “Violet solution reacts to form a grey-green precipitate not in excess”

Answer 10

Chromium(III) with sodium hydroxide