Strong and Weak Acids

    Cards (22)

    • What is the main focus of the video?
      The difference between strong and weak acids
    • What pH value indicates an acid?
      Less than seven
    • Why do acids have a pH of less than seven?
      They ionize to release hydrogen ions
    • What ions does hydrochloric acid dissociate into?
      H<sup>+</sup> and Cl<sup>-</sup>
    • What defines strong acids like hydrochloric and nitric acid?
      They ionize completely in solution
    • What does a hydrogen ion represent?
      A hydrogen atom that lost one electron
    • Name two examples of weak acids.
      Ethanoic acid and citric acid
    • How do weak acids ionize in solution?
      Only a small portion dissociates
    • What does the double arrow in the dissociation equation indicate?
      The reaction is reversible
    • What does it mean when the equilibrium lies to the left for weak acids?
      More undissociated acid than dissociated acid
    • How is acid strength different from concentration?
      Strength is about ionization proportion
    • What does concentration measure in a solution?
      Amount of acid in a certain volume
    • Can strong acids be found in low concentrations?
      Yes, they can be both high and low
    • What does pH measure?
      The concentration of hydrogen ions
    • How does pH change with hydrogen ion concentration?
      Higher concentration results in lower pH
    • What does a decrease of one on the pH scale represent?
      Hydrogen ion concentration increases by a factor of 10
    • If pH changes from 5 to 3, how much does the hydrogen ion concentration increase?
      By a factor of 100
    • If pH changes from 8 to 11, how does the hydrogen ion concentration change?
      Decreases by a factor of 1,000
    • What is required for a strong acid to achieve a low pH?
      A high concentration of hydrogen ions
    • Why does a weak acid need to be concentrated to achieve a low pH?
      Few particles ionize to release hydrogen ions
    • What determines the pH of a solution?
      The concentration of hydrogen ions
    • How does the pH of a strong acid compare to a weak acid at the same concentration?
      The strong acid has a lower pH
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