In Haber’s process of manufacture of ammonia, the ‘catalyst’, the ‘promoter’, and‘ poison for the catalyst’ are respectively:
In Haber’s process of manufacture of ammonia, the ‘catalyst’, the ‘promoter’, and‘ poison for the catalyst’ are respectively:
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- \( Fe, W, CO \)
- \( Co, Mo, CO \)
- \( Fe, Mo, CO_2 \)
\( Fe, Mo, CO \)
The Correct Option is D
Solution and Explanation
Step 1: Understanding the Haber Process
The Haber process is used for the industrial production of ammonia (\( NH_3 \)) from nitrogen (\( N_2 \)) and hydrogen (\( H_2 \)) under high pressure and temperature. The reaction is: \[ N_2 + 3H_2 \rightleftharpoons 2NH_3 \]
Step 2: Identifying the Catalyst, Promoter, and Poison
- Catalyst: Iron (\( Fe \)) is used as the main catalyst to increase the rate of reaction.
- Promoter: Molybdenum (\( Mo \)) is added as a promoter to enhance the efficiency of iron as a catalyst.
- Poison for the Catalyst: Carbon monoxide (\( CO \)) acts as a poison for the iron catalyst by adsorbing on its active sites and deactivating it.
Step 3: Evaluating the Given Options
- Option (1): Incorrect, as tungsten (\( W \)) is not used in the Haber process.
- Option (2): Incorrect, as cobalt (\( Co \)) is not the main catalyst.
- Option (3): Incorrect, as \( CO_2 \) is not the primary catalyst poison.
- Option (4): Correct, as the correct catalyst is \( Fe \), the promoter is \( Mo \), and the poison is \( CO \).
Thus, the correct answer is
Option (4).
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