Colours

Question 1

What colour is [Cu(H2O)6]2+?

Answer 1

Pale Blue Solution

Question 2

What colour is [Cu(NH3)4(H2O)2]2+

Answer 2

Dark Blue Solution

Question 3

What colour is Cu(OH)2

Answer 3

Pale Blue Precipitate

Question 4

What colour is CuCl4^2-

Answer 4

Yellow Solution

Question 5

What colour is Cu+

Answer 5

White precipitate and brown I2

Question 6

What colour is Cu2+/Cu

Answer 6

Brown solid (Cu) and blue solution (CuSO4)

Question 7

What colour is CoCl4^2-

Answer 7

Blue Solution

Question 8

What colour is [Cr(H2O)6]3+

Answer 8

Pale purple solution, becomes green when heated

Question 9

What colour is Cr(OH)3

Answer 9

Dark Green Precipitate

Question 10

[Cr(NH3)6]3+

Answer 10

Purple Solution

Question 11

[Cr(OH)6]3- colour?

Answer 11

Dark Green

Question 12

Cr2O7^2- Colour

Answer 12

Orange

Question 13

CrO4^2- colour?

Answer 13

Yellow

Question 14

[Mn(H2O)6]^2+

Answer 14

Pale pink

Question 15

Mn(OH)2

Answer 15

Pale Brown Precipitate

Question 16

[Fe(H2O)6]2+

Answer 16

Pale green

Question 17

Fe(OH)2

Answer 17

Dark Green Precipitate

Question 18

[Fe(H2O)6]3+

Answer 18

Yellow

Question 19

Fe(OH)3

Answer 19

Orange Brown Precipitate

Question 20

MnO4^-/Fe^2+ –> Mn^2+/Fe^3

Answer 20

Purple to Pale Pink

Question 21

I^-/Fe^3+ –> I2/Fe^2+

Answer 21

Orange Brown to Brown