AP®︎ Chemistry: Topic 7.10 Flashcards

Master key terms and definitions for Topic 7.10 of AP Chemistry – Reaction Quotient and Le Châtelier’s Principle to help you prep for quizzes and the AP exam.

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Term

Concentration Changes and Q

Definition

Adding products increases Q, while adding reactants decreases Q, with K unchanged at constant temperature.

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Concentration Changes and Q
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Adding products increases Q, while adding reactants decreases Q, with K unchanged at constant temperature.

7.10.A7.10.A.2
Q vs. K and Direction of Shift
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Same expression form; comparing current and equilibrium values predicts the shift direction.

7.10.A
Disturbance and Reestablishment of Equilibrium
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A stress makes Q differ from K, so the system shifts until they are equal again.

7.10.A7.10.A.1
Qp and Pressure Shifts
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Uses partial pressures and stoichiometric exponents to predict pressure-driven shifts in gas equilibria.

7.10.A
Temperature Changes and K
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Changing temperature changes the equilibrium constant, unlike concentration or pressure stresses.

7.10.A7.10.A.2