Colours Of Coordination Compounds

Question 1

Colour of CoCl3.6NH3 (1:3 electrolyte)

Answer 1

Yellow

Question 2

Colour of CoCl3.5NH3 (1:2 electrolyte)

Answer 2

Purple

Question 3

Colour of CoCl3.4NH3 (1:1 electrolyte)

Answer 3

Green/violet

Question 4

Colour of [Co(NH3)5(NO2)]Cl2 in -ONO form and -NO2 form respectively

Answer 4

Red, yellow

Question 5

Colour of [Cr(H2O)6]Cl3 and [Cr(H2O)5Cl]Cl2.H2O

Answer 5

Violet, grey-green

Question 6

Colour of [Ti(H2O)6]3+

Answer 6

Violet

Question 7

Colour of [Ni(H2O)6]2+, [Ni(H2O)4(en)]2+, [Ni(H2O)2(en)2]2+ and [Ni(en)3]2+

Answer 7

Green, pale blue, blue/purple, violet