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- Does Le- chatelier principle predict the change of equilibrium concentration for the following reaction if the gas mixture is compressed? <img alt="N_2 O_4 \rightleftharpoons 2NO_2" src="
Does Le- chatelier principle predict the change of equilibrium concentration for the following reaction if the gas mixture is compressed?
Yes, the backward reaction is favoured
Yes , forward reaction is favoured
No change is predicted
No information is obtained about the concentration changes
Answers (1)
Effect of Pressure
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High pressure is favourable for the reaction in which there is a decrease in volume or nr > np.
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Low pressure is favourable for the reaction in which there is an increase in volume or nr < np.
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Pressure is kept constant when the volume is constant or nr = np.
Here
nr = moles of gaseous reactant
np = moles of gaseous product
In the reaction on the reactant side, only one species is present and on the product side, no. of species that are produced is 2.
As the system is compressed to the equilibrium again the reaction will proceed in the backward direction
Therefore, option number (1) is correct.
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