Strong and Weak Acids

• What is the definition of a strong acid?

  Strong acids fully ionize in aqueous solutions.
• What is the definition of a weak acid?

  Weak acids partially ionize in aqueous solutions.
• How do strong acids affect the concentration of hydrogen ions in a solution?

  They produce a greater concentration of hydrogen ions.
• How do weak acids affect the concentration of hydrogen ions in a solution?

  They produce a lower concentration of hydrogen ions.
• What does the pH scale indicate about a solution?

  It indicates the acidity or alkalinity of a solution.
• How does the pH of strong acids compare to weak acids at the same concentration?

  Strong acids have a lower pH than weak acids.
• What happens to the concentration of hydrogen ions as the pH scale decreases?

  The concentration of hydrogen ions increases by 10 times.
• What is meant by 'one order of magnitude' in terms of pH?

  It refers to a tenfold difference in hydrogen ion concentration.
• What is the difference between a dilute acid and a concentrated acid?

  • Dilute acid: fewer acid molecules in a given volume
  • Concentrated acid: more acid molecules in a given volume
• How does the concentration of an acid affect its pH?

  A higher concentration results in a lower pH.