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Question
Chemistry
In NH3 synthesis by Haber’s process, what is the effect on the rate of the reaction with the addition of Mo and CO, respectively?
Q. In
N
H
3
synthesis by Haber’s process, what is the effect on the rate of the reaction with the addition of Mo and CO, respectively?
1993
222
KEAM
KEAM 2018
Surface Chemistry
Report Error
A
Increases and decreases
33%
B
Decreases and decreases
33%
C
Decreases and increases
0%
D
Both Mo and CO increases the rate
0%
E
Both Mo and CO does not affect the rate
0%
Solution:
In formation of
N
H
3
by Haber's process.
N
2
(
g
)
+
3
H
2
(
g
)
⟶
Δ
,
catalyst
2
N
H
3
(
g
)
(i) When Mo is used as catalyst, it increase the rate of formation of
N
H
3
because it behaves as promoter.
(ii) But, when CO is used as catalyst it decreases the formation of
N
H
3
because it behaves as poisoning agent.