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  1. Khan Academy

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  2. pH, pOH, and the pH scale (article) | Khan Academy

    Definitions of pH, pOH, and the pH scale. Calculating the pH of a strong acid or base solution. The relationship between acid strength and the pH of a solution.

  3. pH, acids, and bases review (article) | Khan Academy

    The pH scale is used to rank solutions in terms of how acidic or how basic they are. It indicates the concentration of hydrogen ions (H+) and hydroxide ions (OH-) in a solution.

  4. Amino acid structure and classifications (article) | Khan Academy

    This article reviews the 20 proteinogenic amino acids, their structures, symbols, and abbreviations, and related information important for the MCAT.

  5. Buffer solution pH calculations (video) | Khan Academy

    Example of calculating the pH of a buffer solution using the Henderson-Hasselbalch equation, including the pH of the buffer solution after adding some NaOH.

  6. pH of salt solutions (video) | Khan Academy

    - Our goal is to find the pH of different salt solutions, and we'll start with this solution of sodium acetate. So in solution, we're gonna have sodium ions, Na+, and acetate anions, CH3COO-, and the sodium …

  7. Weak acid-base equilibria (article) - Khan Academy

    Weak acid and base ionization reactions and the related equilibrium constants, Ka and Kb. Relating Ka and Kb to pH, and calculating percent dissociation.

  8. Chemistry archive | Science | Khan Academy

    Unit 1: Atoms, compounds, and ions Introduction to the atom History of atomic structure Quantum numbers and orbitals Electron configurations Introduction to the periodic table Periodic table trends …

  9. Acids and bases | AP®︎/College Chemistry - Khan Academy

    Use ICE tables and Ka or Kb values to calculate pH and determine relative acid or base strength. Apply Le Châtelier’s Principle to predict changes in concentration.

  10. Buffer capacity (video) | Buffers | Khan Academy

    And since we can substitute moles for that, we can grab those from our ICF table and plug in the moles of acetate anion and the moles of acidic acid, and then solve for the pH.