AP®︎ Chemistry: Topic 8.2 Flashcards

Master key terms and definitions for Topic 8.2 of AP Chemistry – pH and pOH of Strong Acids and Bases to help you prep for quizzes and the AP exam.

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Term

pH

Definition

The negative base-10 logarithm of hydronium ion concentration, pH = -log[H3O+].

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pH
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The negative base-10 logarithm of hydronium ion concentration, pH = -log[H3O+].

8.2.A
pOH
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The negative base-10 logarithm of hydroxide ion concentration, pOH = -log[OH-].

8.2.A
Strong Acids to Memorize
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HCl, HBr, HI, HNO3, HClO3, HClO4, and H2SO4 are the common strong acids.

8.2.A8.2.A.1
Hydronium and Hydrogen Ion
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In aqueous solution, H3O+ and H+ are used interchangeably to represent the protonated form of water.

8.2.A
Strong Acids and pH Calculation
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These acids fully ionize, so hydronium concentration equals the initial acid concentration.

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Strong Bases and Hydroxide Stoichiometry
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These bases fully dissociate, giving hydroxide equal to one or two times formula concentration.

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Kw and the pH-pOH Relationship
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At 25°C, water's ion product makes pH plus pOH equal 14.

8.2.A