transition metals

Question 1

fe2+ - fe3+

Answer 1

manganate (VII) ions
purple to colourless

Question 2

fe3+ - fe2+

Answer 2

iodide ions
orange solution to brown solution (iodine)

Question 3

dichromate (VI) - cr3+

Answer 3

zinc
orange to green

Question 4

cr3+ - cr2+

Answer 4

zinc
green to blue solution

Question 5

cr3+ - cr04 2- (chromate)

Answer 5

hot alkaline hydrogen peroxide
green solution to yellow solution

Question 6

cu+ - cu and cu2+

Answer 6

hot dilute sulfuric acid
brown ppt and blue solution

Question 7

cu2+ - cu+

Answer 7

iodide ions
blue solution to brown solution in white solid

Question 8

cu2+

Answer 8

blue solution

Question 9

fe2+

Answer 9

green solutionf

Question 10

fe3+

Answer 10

orange/brown solution

Question 11

mn2+

Answer 11

pink solution

Question 12

cr3+

Answer 12

violet solution

Question 13

cu(oh)2

Answer 13

blue ppt

Question 14

fe(oh)2

Answer 14

green ppt

Question 15

fe(oh)3

Answer 15

orange/brown ppt

Question 16

mn(oh)2

Answer 16

light brown pptc

Question 17

cr(oh)3

Answer 17

green ppt

Question 18

[cr(oh)6]3-

Answer 18

green solution

Question 19

CuI

Answer 19

white solid

Question 20

[CuCl4]2-

Answer 20

yellow solution

Question 21

[Cu(NH3)4(H20)2]2+

Answer 21

deep blue solution

Question 22

[cr(nh3)6]3+

Answer 22

purple solution

Question 23

MnO4

Answer 23

purple solution

Question 24

Cr207 2-

Answer 24

orange solution

Question 25

Cr2+

Answer 25

blue solution

Question 26

C204 2-

Answer 26

yellow solution

Question 27

Cu

Answer 27

brown solid