Ammonia is made from nitrogen and hydrogen. The energy change in the reaction is 292 kJ / mole. The reaction is reversible, and reaches equilibrium. a Write the equation for the reaction. b Is the forward reaction endothermic, or exothermic? Give your evidence. c Explain why the yield of ammonia: i rises if you increase the pressure ii falls if you increase the temperature d What effect does increasing: i the pressure ii the temperature have on the rate at which ammonia is made? e Why is the reaction carried out at 450 °C rather than at a lower temperature?
Ammonia is made from nitrogen and hydrogen. The energy change in the reaction is 292 kJ / mole. The reaction is reversible, and reaches equilibrium. a Write the equation for the reaction. b Is the forward reaction endothermic, or exothermic? Give your evidence. c Explain why the yield of ammonia: i rises if you increase the pressure ii falls if you increase the temperature d What effect does increasing: i the pressure ii the temperature have on the rate at which ammonia is made? e Why is the reaction carried out at 450 °C rather than at a lower temperature?
Chemistry for Engineering Students
4th Edition
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter12: Chemical Equilibrium
Section: Chapter Questions
Problem 12.100PAE: 12.100 A reaction important in smog formation is O3(g)+NO(g)O2(g)+NO2(g)K=6.01034 (a) If the initial...
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Ammonia is made from nitrogen and hydrogen.
The energy change in the reaction is 292 kJ / mole.
The reaction is reversible, and reaches equilibrium.
a Write the equation for the reaction.
b Is the forward reaction endothermic, or
exothermic? Give your evidence.
c Explain why the yield of ammonia:
i rises if you increase the pressure
ii falls if you increase the temperature
d What effect does increasing:
i the pressure ii the temperature
have on the rate at which ammonia is made?
e Why is the reaction carried out at 450 °C
rather than at a lower temperature?
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