Catalysts

Question 1

Vanadium in the Contact Process

Answer 1

V2O5 + SO2 -> V2O4 + SO3
V2O4 + 0.5O2 -> V2O5
overall SO2 + 0.5O2 -> SO3 V2O5(s)

Question 2

Iron in the Haber Process

Answer 2

N2 + 3H2 -> 2NH3 Fe(s)

Question 3

How Fe2+ catalyses

(S2O8) 2- + 2I- -> I2 + 2(SO4) 2-

Answer 3

(S2O8) 2- + 2Fe2+ -> 2Fe3+ (2SO4) 2-

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

Question 4

How Mn2+ catalyses

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

Answer 4

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

2Mn3+ + C2O4 2- -> 2Mn 2+ + 2co2