Transition metals

Question 1

What colour is Ti³+ ?

Answer 1

Purple

Question 2

What colour is Ti²+ ?

Answer 2

Violet

Question 3

What colour is VO₂+ ?

Answer 3

Yellow

Question 4

What colour is V³+ ?

Answer 4

Green

Question 5

What colour is V²+ ?

Answer 5

Violet

Question 6

What colour is Cr₂O₇²- ?

Answer 6

Orange

Question 7

What colour is Cr³+?

Answer 7

Green

Question 8

What colour is MnO₄-?

Answer 8

Purple

Question 9

What colour is MnO₄²- ?

Answer 9

Green

Question 10

What colour is Mn²+ ?

Answer 10

Pale pink

Question 11

What colour is Fe³+?

Answer 11

Yellow

Question 12

What colour is Fe²+?

Answer 12

Pale green

Question 13

What colour is CO²+?

Answer 13

Pink

Question 14

What colour is Ni²+?

Answer 14

Green

Question 15

What colour is Cu²+?

Answer 15

Pale blue

Question 16

What are chromium ions reduced by?

Answer 16

Zinc

Question 17

Why do transition metals make good catalysts?

Answer 17

Because they can change oxidation number by gaining or losing electrons within their d- orbitals

Question 18

What type of catalyst can Mn²+ act as?

Answer 18

An autocatalyst

Question 19

What is used to memorise the oxidation states of Vanadium?

Answer 19

• You Better Get Vanadium
• Yellow Blue Green Violet
• +5, +4, +3, +2

Question 20

Which industrial processes involve a heterogenous catalyst?

Answer 20

The Haber Process and the Contact Process

Question 21

Where do most reactions involving homogeneous catalysts take place?

Answer 21

In solution