What is the primary reason for the increase in pH when a weak acid is titrated w

Practice Questions

Q1
What is the primary reason for the increase in pH when a weak acid is titrated with a strong base?
  1. Formation of water
  2. Neutralization of acid
  3. Formation of a conjugate base
  4. All of the above

Questions & Step-by-Step Solutions

What is the primary reason for the increase in pH when a weak acid is titrated with a strong base?
  • Step 1: Understand what pH is. pH is a measure of how acidic or basic a solution is.
  • Step 2: Know that weak acids do not completely dissociate in water. This means they do not release all their hydrogen ions (H+) into the solution.
  • Step 3: Recognize that strong bases completely dissociate in water, releasing hydroxide ions (OH-).
  • Step 4: When you add a strong base to a weak acid, the hydroxide ions from the base react with the hydrogen ions from the weak acid.
  • Step 5: This reaction reduces the number of free hydrogen ions in the solution, which causes the pH to increase.
  • Step 6: As more strong base is added, more hydrogen ions are neutralized, leading to a further increase in pH.
  • Step 7: Eventually, if enough strong base is added, the solution can become neutral or even basic, depending on the amounts used.
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