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Question

N2(g)+3H2(g)2NH3(g)+heat
Given the reaction shown above, which change will not shift the equilibrium position for the reaction?

A
Addition of N2
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B
Addition of NH3
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C
Cooling the reaction system
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D
Addition of an iron catalyst
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E
Decreasing the pressure
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Solution

The correct option is D Addition of an iron catalyst
The given reaction is :-
N2(g)+3H2(g)2NH3(g)+heat
Addition of Iron catalyst will not shift the equilibrium position of the reaction. The catalyst only help the reaction to reach equilibrium quickly by altering the reaction pathway by lowering the activation energy. It increases the rate of both forward & backward reaction in same amounts so as to attain equilibrium quickly.

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