Essential Chemistry for IGCSE - Chemical Reactions (Section 2 - No. 50)

For the reaction: A(g) + B(g) ⇌ C(g) + D(g). If the pressure is increased, the equilibrium will:
Shift to the side with more moles of gas.
Shift to the side with fewer moles of gas.
Remain unchanged.
Cannot be determined without knowing the enthalpy change.

Explanation

An increase in pressure will favor the side with fewer moles of gas to relieve the stress.

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