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In the Haber process:<br/>N₂(g) + 3H₂(g) ⇌ 2NH₃(g)<br/>the use of ...

In the Haber process:<br/>N₂(g) + 3H₂(g) ⇌ 2NH₃(g)<br/>the use of moderate temperature is preferred because:
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  • A Very high temperature lowers ammonia yield
  • B Hydrogen becomes unstable rapidly
  • C Ammonia forms only when cooled
  • D Nitrogen reacts only at low pressure
Correct Answer: Option A
Explanation:
Low temperatures favour ammonia formation because the reaction is exothermic, but the reaction becomes too slow. Very high temperatures increase reaction speed but reduce ammonia yield. Therefore, a moderate temperature is used to balance yield and reaction speed.

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