Chapter 6 2020/2021

a) Ammonia, NH3, is produces at 500 oC and 200 atm in the presence of Fe2O3 catalyst according to the following equation: 

3H2 (g) + N2 (g) ⇌ 2 NH3 (g)             ΔH= –99.22 kJ 

Suggest two (2) changes that can be made to increase the yield of NH3. Explain your suggestions. 

[4 Marks]    

b) Consider the following reaction:  

2 SO2 (g) + O2 (g) ⇌ 2 SO3 (g)        Kc= 4.62  

Determine the direction of the reaction if the concentrations of SO2(g), SO3(g) and O2(g) are 0.2 M, 0.15 M and 8.55 x10-3 M, respectively.  

[5 Marks]