AP®︎ Chemistry: Topic 7.3 Flashcards

Master key terms and definitions for Topic 7.3 of AP Chemistry – Reaction Quotient and Equilibrium Constant to help you prep for quizzes and the AP exam.

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Term

Qc and Qp

Definition

Qc uses molar concentrations; Qp uses gas partial pressures for the same reaction ratio.

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Qc and Qp
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Qc uses molar concentrations; Qp uses gas partial pressures for the same reaction ratio.

7.3.A7.3.A.1
Pure Solids and Pure Liquids in Q or K Expressions
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They are omitted because their effective concentrations remain constant during the reaction.

7.3.A7.3.A.2
Reaction Quotient (Q) and Equilibrium Constant (K)
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One uses current concentrations or pressures, while the other uses equilibrium values only.

7.3.A7.3.A.1
Comparing Q and K
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Comparing these values predicts whether a reaction shifts left, right, or stays at equilibrium.

7.3.A
Writing Q and K Expressions
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Write products over reactants, raise terms to coefficients, and omit pure solids and liquids.

7.3.A7.3.A.2