The increase or decrease in pressure will cause a shift in the equilibrium position of a chemical reaction.
The effect of pressure on equilibrium position of a chemical reaction can be explained using Le Chαtelier's principle.
According to Le Chαtelier's principle, as the pressure increases, the equilibrium position will shift to the side of the reaction with the fewer number of moles of gas, while a decrease in pressure shifts an equilibrium position to the side of the reaction with the greater number of moles of gas.
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