Question detail
In a titration curve of a weak acid against a strong base, what is observed at the equivalence point?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Acids and bases (A-level only)
Question
- A. A sharp increase in pH
- B. A gradual increase in pH
- C. No change in pH
- D. A decrease in pH
Answer
A sharp increase in pH
Explanation
At the equivalence point of a weak acid and strong base titration, there is a sharp increase in pH due to the complete neutralization of the weak acid by the strong base, resulting in a significant change in pH.
Common mistake
Indicator Selection Mistake
Students often confuse the transition range of indicators with their pH range, leading to incorrect indicator selection for titrations.
To select a suitable indicator, use the formula for pH transition range. For example, if the equivalence point of a titration is at pH 7, choose an indicator with a transition range that includes pH 7. Ensure to check the specific pH range of the indicator and compare it with the expected pH at the equivalence point.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.