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How can we yield maximum ammonia from Haber's process?

Correct answer: A. High pressure, low temperature, continual removal of ammonia

  • A. High pressure, low temperature, continual removal of ammonia
  • B. Low pressure, high temperature, increase the ammonia content
  • C. High temperature and high pressure
  • D. All of above

Explanation

High Pressure: Increasing the pressure favors the forward reaction (formation of ammonia) because there are fewer moles of gas on the product side. This increases the yield of ammonia.Low Temperature: Lowering the temperature also favors the forward reaction. Although a higher temperature increases the rate of the reaction, a lower temperature is preferred for maximizing the equilibrium yield.Continual Removal of Ammonia: Continually removing ammonia from the reaction mixture helps shift the equilibrium towards the formation of more ammonia. This is because removing the product as it forms prevents the reverse reaction from occurring

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About Chemical Equilibrium

Reversible reactions reach dynamic equilibrium when forward and reverse rates become equal, and Le Chatelier's principle predicts the effect of changing concentration, pressure or temperature. The chapter also covers solubility product, the common ion effect, buffer action and the conditions used in Haber's process, with equilibrium shifts distinguished from changes in the equilibrium constant.

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