Given the following reaction at equillibrium, N2(g)+3H2(g)⇌2NH3(g);ΔH=−ve Some inert gas is added at constant pressure to the system. Predict which of the following facts will be affected?
A
More NH3(g) is produced
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B
Less NH3(g) is produced
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C
No effect on equllibrium
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D
Kp of the reaction is decreased
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Solution
The correct option is B Less NH3(g) is produced N2(g)+3H2(g)⇌2NH3(g);ΔH=−ve If an inert gas is added at a constant pressure, the reaction goes to that side where the number of moles increases. So reverse reaction takes place and less ammonia is produced.