Titration Curves Worksheet
This worksheet covers titration curves, including strong acid-strong base, strong acid-weak base, and weak acid-strong base titrations. Students will analyze graphs, identify key points, and understand the chemical principles involved.
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Titration Curves Worksheet
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Read each question carefully and answer to the best of your ability. Refer to your knowledge of titration curves and acid-base chemistry.
1. Which of the following best describes the equivalence point in a strong acid-strong base titration?
The point where the pH is always 7.
The point where the moles of acid equal the moles of base.
The point where the indicator changes color.
The point where the solution becomes a buffer.
2. What type of titration curve is expected when a strong acid is titrated with a weak base?
Starts at high pH, ends at low pH, equivalence point at pH < 7.
Starts at low pH, ends at high pH, equivalence point at pH > 7.
Starts at low pH, ends at high pH, equivalence point at pH < 7.
Starts at high pH, ends at low pH, equivalence point at pH > 7.
3. The point at which the added titrant completely neutralizes the analyte is known as the .
4. In a weak acid-strong base titration, the pH at the equivalence point will be than 7.
5. Briefly describe the role of an indicator in an acid-base titration.
6. Analyze the titration curve below, which represents the titration of a 50.0 mL strong acid solution with a 0.100 M strong base.
a) Estimate the initial pH of the strong acid.
b) What is the pH at the equivalence point?
c) What volume of base was added to reach the equivalence point?
7. The half-equivalence point in a weak acid-strong base titration corresponds to the pKa of the weak acid.
True
False
8. Explain why the pH changes rapidly near the equivalence point in a titration.
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