More Colours

Question 1

Iron 2 complex colour change?

Answer 1

Pale green sol to green ppt
Is for both

Question 2

Iron 3 complex change?

Answer 2

Yellow/brown Sol to Brown ppt

Question 3

Chromium 3 + Oh/NH3 obs?

Answer 3

Violet/green Sol forms green ppr

Question 4

Chromium 3 add excess OH

Answer 4

Green ppt to green Sol

Question 5

Cr(OH)3(H2O)3 add excess NH3 obs?

Answer 5

Green ppt to violet sol

Question 6

Cr(OH)6]3- add hydrogen peroxide (H2O2) obs

Answer 6

Green Sol to yellow Sol

Question 7

Chromate(IV) + H+ obs

Answer 7

Yellow to orange

Question 8

What is the first and second reduction colour change of dichromate ions

Answer 8

Orange to green then green to blue

Question 9

Colour change of Va+2-Va+5?

Answer 9

Please give Ben yellow
Purple green blue yellow