2: Water and pH
Students calculate pH from pKa using the Henderson-Hasselbalch equation, predict protonation states of simple acids and bases, and analyze buffer systems.
LibreTexts reference: Unit 1, Chapter 2: Chemistry of Water 
2.1 Correct Form of the Henderson-Hasselbalch Equation
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Remember ➀Factual ➀
2.2 pH Using the Henderson-Hasselbalch Equation
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Apply ➂Procedural ➂
2.3 pH Using the Henderson-Hasselbalch Equation
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Apply ➂Procedural ➂
2.4 pKa and pKb Using the Henderson-Hasselbalch Equation
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Apply ➂Procedural ➂
2.5 pKa and pKb Using the Henderson-Hasselbalch Equation
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Apply ➂Procedural ➂
2.6 Conjugate Base-to-Acid Ratios Using the Henderson-Hasselbalch Equation
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Apply ➂Procedural ➂
2.7 Conjugate Base-to-Acid Ratios Using the Henderson-Hasselbalch Equation
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Apply ➂Procedural ➂
2.8 Protonation States of Chemical Groups
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Apply ➂Conceptual ➁
2.9 Functional Group Classification by Bond Type
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Understand ➁Factual ➀
2.10 Optimal Buffering Range Using pKa
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Apply ➂Conceptual ➁
2.11 Predominant Protonation State from pH and pKa (Diprotic)
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Apply ➂Conceptual ➁
2.12 Predominant Protonation State from pH and pKa (Triprotic)
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Apply ➂Conceptual ➁
2.13 Predominant Protonation State from pH and pKa (Tetraprotic)
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Apply ➂Conceptual ➁
2.14 pH Differences Between Solutions
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Apply ➂Procedural ➂