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Question: Answered & Verified by Expert
The catalyst and promoter respectively used in the Haber's process of industrial synthesis of ammonia are
Chemistryp Block Elements (Group 15, 16, 17 & 18)JEE Main
Options:
  • A $\mathrm{Mo}, \mathrm{V}_2 \mathrm{O}_5$
  • B $\mathrm{V}_2 \mathrm{O}_5, \mathrm{Fe}$
  • C $\mathrm{Fe}, \mathrm{Mo}$
  • D $\mathrm{Mo}, \mathrm{Fe}$
Solution:
1539 Upvotes Verified Answer
The correct answer is: $\mathrm{Fe}, \mathrm{Mo}$
In the Haber's process for the synthesis of ammonia from $\mathrm{N}_2$ and $\mathrm{H}_2$, $\mathrm{Fe}$ is used as catalyst and Mo works as activator.
$\mathrm{N}_2+3 \mathrm{H}_2 \stackrel{\mathrm{Fe}, \mathrm{Mo}}{\rightleftharpoons} 2 \mathrm{NH}_3+22.4 \mathrm{kcal}$

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