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1.3 3 (i) In the Haber process for the production of ammonia, the following reaction occurs: 3H2 (g) 2NH3(g) N2 (g) + AH is negative If the equilibrium concentrations for all the reactants and products at 600°C are: [N₂] = 0.40 mol/dm³, [H₂] = 1.20 mol/dm³ and [NH3] = 0.20 mol/dm³ Construct an expression for Kc and calculate the numerical value of the equilibrium constant, Ka (ii) At 500°C Kc 0.062 mol-2dm. Compare this value to the one you calculated in 3(i) above and state whether the yield of ammonia is greater at 500°C or 600°C and briefly explain your choice.

1.3 3 (i) In the Haber process for the production of ammonia, the following reaction occurs: 3H2 (g) 2NH3(g) N2 (g) + AH is negative If the equilibrium concentrations for all the reactants and products at 600°C are: [N₂] = 0.40 mol/dm³, [H₂] = 1.20 mol/dm³ and [NH3] = 0.20 mol/dm³ Construct an expression for Kc and calculate the numerical value of the equilibrium constant, Ka (ii) At 500°C Kc 0.062 mol-2dm. Compare this value to the one you calculated in 3(i) above and state whether the yield of ammonia is greater at 500°C or 600°C and briefly explain your choice.

Principles of Modern Chemistry
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter14: Chemical Equilibrium
Section: Chapter Questions
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1.3 3 (i) In the Haber process for the production of ammonia, the following reaction occurs: 3H2(g) 2NH3(g) AH is negative N2 (g) + If the equilibrium concentrations for all the reactants and products at 600°C are: [N₂] = 0.40 mol/dm³, [H₂] = 1.20 mol/dm³ and [NH3] = 0.20 mol/dm³ Construct an expression for Kc and calculate the numerical value of the equilibrium constant, Kc. (ii) At 500°C Kc 0.062 mol-2dm. Compare this value to the one you calculated in 3(i) above and state whether the yield of ammonia is greater at 500°C or 600°C and briefly explain your choice. =
Transcribed Image Text:1.3 3 (i) In the Haber process for the production of ammonia, the following reaction occurs: 3H2(g) 2NH3(g) AH is negative N2 (g) + If the equilibrium concentrations for all the reactants and products at 600°C are: [N₂] = 0.40 mol/dm³, [H₂] = 1.20 mol/dm³ and [NH3] = 0.20 mol/dm³ Construct an expression for Kc and calculate the numerical value of the equilibrium constant, Kc. (ii) At 500°C Kc 0.062 mol-2dm. Compare this value to the one you calculated in 3(i) above and state whether the yield of ammonia is greater at 500°C or 600°C and briefly explain your choice. =
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