Practice Quiz

Praxis II: Chemistry Exam Prep

Category - Chemistry

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Examine the following titration curves. Which of the four represents the titration curve for a strong base and weak acid?
  1. The top left graph
  2. The top right graph
  3. The bottom left graph
  4. The bottom right graph
  5. None of the above
Explanation
Answer: C. The bottom left starts at a high pH (strong base) and ends at a high pH (weak acid). Thus, C is the correct answer.

The top left graph represents a strong base (pH starts very high) and strong acid (steep drop and low final pH).

The top right graph represents a weak base (lower starting pH) and strong acid (steep drop and low final pH).

The bottom right graph is a weak acid and weak base (low starting pH, high final pH, and no steep drop).

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