Catalyst Equations

Question 1

What is the contact process?

Answer 1

The use of vanadium oxide catalyst to oxidise SO2 into SO3

Question 2

What are the two steps of the contact process?

Answer 2

1) V2O5 + SO2 -> V2O4 + SO3

2) V2O4 + 1/2O2 -> V2O5

Question 3

What ion catalyses the reaction:

S2O8^2- + 2I^- -> I2 + 2SO4^2-

Answer 3

Fe2+

Homogenous catalyst

Question 4

What are the two equations that show the action of the Fe2+ catalyst? (With I2/S2O8)

Answer 4

1) S2O8^2- + 2Fe2+ -> 2Fe3+ + 2SO4^2-

2) 2Fe3+ + 2I- -> I2 + 2Fe2+

Question 5

Which homogenous catalyst catalyses the reaction between C2O4^2- and MnO4-?

Answer 5

Mn2+

Question 6

How does Mn2+ effect the reaction?

Answer 6

Speed up the rate by providing a positive ion for the two negatives to react with

It is a product of the reaction so as the reaction progresses it speed up

Question 7

What two equations show the action of the Mn2+ catalyst? (MnO4-/C2O4^2-)

Answer 7

1) MnO4- + 4 Mn2+ +8H+ -> 5Mn3+ + 4H2O

2) 2Mn3+ + C2O4^2- -> 2Mn2+ + 2CO2

Question 8

What transition metal ion reduces manganate ions into Mn2+ ions?

Answer 8

Fe2+

Question 9

What is the overall redox equation for the reaction of MnO4- and Fe2+?

Answer 9

MnO4- + 8H+ + 5Fe2+ -> Mn2+ + 5Fe3+ + 4H2O

Question 10

What is the overall equation for the reaction of potassium manganate and acidified sodium ethanedioate?

Answer 10

2MnO4- + 16H+ + 5C2O4 ^2- -> 2Mn2+ + 8H2O + 10CO2