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In NH(3) synthesis by Haber's process, w...

In `NH_(3)` synthesis by Haber's process, what is the effect on the rate of the reaction with the addition of Mo and CO, respectively?

A

increases and decreases

B

Decreases and decreases

C

Decreases and increases

D

Both Mo and CO increases the rate

Text Solution

Verified by Experts

The correct Answer is:
A
In formation of `NH_(3)` by Haber.s process. `N_(2)(g) + 3H_(2)(g) overset(Delta, "catalyst")rarr 2NH_(3)(g)`
(i) When Mo is used as catalyst, it increase the rate of formation of `NH_(3)` because it behavees as promoter.
(ii) But, when CO is used as catalyst it decreases the formation of `NH_(3)` because it begaves as poisoning agent.
`therefore` (a) is the correct answer.
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