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Acid-Base Titration and pH
Chemistry Chapter 16 Acid-Base Titration and pH
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Self-Ionization of Water
H2O + H2O H3O+ + OH-
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Ion Concentration in Water
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Kw – Ionization Constant for Water
In pure water at 25 C: [H3O+] = 1 x 10-7 mol/L [OH-] = 1 x 10-7 mol/L Kw is a constant at 25 C: Kw = [H3O+][OH-] Kw = (1 x 10-7)(1 x 10-7) = 1 x 10-14
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H+, OH-, and pH
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pH Scale
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Relationship between pH and pOH
Calculating pH, pOH pH = -log10(H3O+) pOH = -log10(OH-) Relationship between pH and pOH pH + pOH = 14 Finding [H3O+], [OH-] from pH, pOH [H3O+] = 10-pH [OH-] = 10-pOH
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pH + pOH = 14
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Measuring pH with wide-range paper
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Narrow-Range pH Paper
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pH Indicators and their ranges
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Titration Calculations
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Titration Curves
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