Which catalyst is used in the Haber process for ammonia?
Answer and explanation
Correct answer: C. Finely divided iron
- Step 1: The industrial synthesis of ammonia via the Haber process involves the direct combination of nitrogen and hydrogen: .
- Step 2: To activate the inert triple bond under feasible operating temperatures, finely divided iron promoted with metal oxides (such as and ) is used as the heterogeneous catalyst.
Answer
Finely divided iron.
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