transition metals

Question 1

if there a no ligands what does this mean?

Answer 1

colourless

Question 2

what does Fe2+ form in solution and what colour?

Answer 2

[Fe(H2O)6]2+
PALE GREEN

Question 3

what does Fe3+ form in solution and what colour?

Answer 3

[Fe(H2O)6]3+
YELLOW

Question 4

Cu2+

Answer 4

BLUE

Question 5

Cr3+

Answer 5

DARK GREEN

Question 6

Co2+

Answer 6

PINK

Question 7

PALE GREEN COMPLEX

Answer 7

Fe2+

Question 8

BLUE COMPLEX

Answer 8

Cu2+

Question 9

YELLOW COMPLEX

Answer 9

Fe3+

Question 10

PINK COMPLEX

Answer 10

Co2+

Question 11

DARK GREEN COMPLEX

Answer 11

Cr3+

Question 12

WHen there are 6 ligands whats the shape

Answer 12

octahedral

Question 13

4 ligand shape is

Answer 13

tetrahedral

Question 14

When OH- is added to [Cr(H2O)6]3+ what is formed, and what happens when excess OH- is added?

Answer 14

Grey-Green precipitate of [Cr(H2O)3(OH)3]
On excess the precipitate dissolves giving a deep green solution of [Cr(OH)6]3-

Question 15

When OH- is added to [Fe(H2O)6]2+ what is formed, and what happens when excess OH- is added?

Answer 15

Dark green precipitate of [Fe(H2O)4(OH)2]
On excess no further reaction for bulk

Question 16

When OH- is added to [Fe(H2O)6]3+ what is formed, and what happens when excess OH- is added?

Answer 16

Red-Brown precipitate of [Fe(H20)3(OH)3]
No further reaction with excess

Question 17

When OH- is added to [Cu(H2O)6]2+ what is formed, and what happens when excess OH- is added?

Answer 17

Pale blue precipitate of [Cu(H2O)4(OH)2]
no further reaction with excess