Inorganic Chemistry equations: catalysts

Question 1

Heterogeneous Catalysts:
Contact process using V2O5

Answer 1

2SO2 (g) + O2 (g) ⇌ 2SO3(g)
SO2 (g) + V2O5 (s) → V2O4 (s) + SO3 (g)
O2 (g) + 2V2O4 (s) → 2V2O5 (s)

Question 2

Heterogeneous Catalysts:
Haber process using Fe:

Answer 2

N2 (g) + 3H2 (g) ⇌ 2NH3 (g)

Question 3

Homogeneous Catalysts:
Fe2+ catalysing this reaction: S2O82- (aq) + 2I- (aq) → I2 (aq) + 2SO42- (aq)

Answer 3

1) S2O82- (aq) + 2Fe2+ (aq) → 2SO42- (aq) + 2Fe3+ (aq)
2) 2I- (aq) + 2Fe3+ (aq) → I2 (aq) + 2Fe2+ (aq)

Question 4

Autocatalysis using Mn2+

Answer 4

Overall: 2MnO4- (aq) + 16H+(aq) + 5C2O42-(aq) → 2Mn2+ (aq) + 10CO2(aq) + 8H2O (l)

1) 4Mn2+ (aq) + MnO4– (aq) + 8H+ (aq) → 5Mn3+ (aq) + 4H2O (aq)

2) 2Mn3+ (aq) + C2O42- (aq) → 2CO2 (g) + 2Mn2+ (aq)