In Haber's process, hydrogen is obtained by reacting methane with steam in presence of $\mathrm{NiO}$ as catalyst. The process is known as steam reforming. Why is it necessary to remove $\mathrm{CO}$ when ammonia is obtained by Haber's process?

Question

In Haber's process, hydrogen is obtained by reacting methane with steam in presence of $\mathrm{NiO}$ as catalyst. The process is known as steam reforming. Why is it necessary to remove $\mathrm{CO}$ when ammonia is obtained by Haber's process?,

MARKS App · Accepted Answer

$\mathrm{CO}$ acts as a poison for the catalyst used in the manufacture of $\mathrm{NH}_3$ by Haber's process. Hence, it is necessary to remove it.

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