The Haber process for the synthesis of ammonia may operate at a temperature of 450C and pressure
Question:
The Haber process for the synthesis of ammonia may operate at a temperature of 450°C and pressure of 1.50 × 107 Pa using an iron catalyst.
N2(g) + 3H2(g) ⇋ 2NH3(g)
ΔHr = –92 kJ mol–1
a. Suggest why the temperature of more than 450 °C is not used even though the rate of reaction would be faster.
b. Suggest why the reaction is carried out at a high pressure rather than at normal atmospheric pressure. Explain your answer.
c. Explain why the removal of ammonia as soon as it is formed is an important part of this industrial process.
d. When the ammonia has been removed, why doesn’t it decompose back to nitrogen and hydrogen?
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a The reason is that the heat of reaction is released at a low te...View the full answer
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Related Book For 
Cambridge International AS And A Level Chemistry Coursebook
ISBN: 9781316637739
2nd Edition
Authors: Lawrie Ryan, Roger Norris
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