Chap15-Part5 - 2)PressureChanges:GasPhaseEquilibria Areac'...

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2) Pressure Changes: Gas‐Phase Equilibria A reac’on is at equilibrium in the gas phase. The volume is reduced while keeping the temperature constant. The reduc’on in volume causes an ini’al increase in pressure. The par’al pressures of all reactants and products are all ini’ally increased by the same factor. The equilibrium constant K p is not changed. The reac’on proceeds un’l the new reactant and product concentra’ons agree with the value of K p .
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Example: A + B ↔ C The reac’on proceeds to the right.
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Example: A B + C The reac’on proceeds to the leE.
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Volume and Pressure Changes: Gas‐Phase Equilibria In general, decreasing the volume shiEs the reac’on towards the direc’on that decreases the total number of mols of gas; and increasing the volume shiEs the reac’on towards the direc’on that increases the total number of mols of gas.
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Decreasing the volume shiEs the reac’on to the leE.
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The volume is decreased for the following gas phase reac’ons ini’ally at equilibrium. In which direc’on will the reac’on proceed to re‐establish equilibrium? 2A ↔ B A + 3B ↔ 2C A + B ↔ 2C
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The volume is decreased for the following gas phase reac’ons ini’ally at equilibrium. In which direc’on will the reac’on proceed to re‐establish equilibrium? 2A ↔ B to the right A + 3B ↔ 2C A + B ↔ 2C
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The volume is decreased for the following gas phase reac’ons ini’ally at equilibrium. In which direc’on will the reac’on proceed to re‐establish equilibrium? 2A ↔ B to the right A + 3B ↔ 2C to the right A + B ↔ 2C
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The volume is decreased for the following gas phase reac’ons ini’ally at equilibrium. In which direc’on will the reac’on proceed to re‐establish equilibrium? 2A ↔ B to the right A + 3B ↔ 2C to the right A + B ↔ 2C no change
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The volume is increased for the following gas phase reac’ons ini’ally at equilibrium.
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