Practice Buffer Capacity (7.4.3) - Chapter 8: Acids and Base

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6 sample questions

Question 1.
Define buffer capacity.
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Think about the role of buffers in pH stabilization.
Question 2.
What components typically make up a buffer?
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Consider the acid-base pairs.
3Question 3.
What defines buffer capacity?
- The amount of acid a buffer can handle.
- The ability to change pH rapidly.
- The ability to resist pH changes.
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Think about what buffers actually do.
4Question 4.
True or False: Buffers are only made of weak acids.
- True
- False
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Remember the definitions of buffer systems.
Question 5.
Design a buffer system that can maintain a pH of 7.4, suitable for biological applications. Which weak acid and its conjugate base would you choose?
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Use the Henderson-Hasselbalch equation to support your argument.
Question 6.
A buffer composed of acetic acid and sodium acetate has a capacity for 0.1 M of strong acid. Calculate how many moles of strong acid can be added before the pH starts to decline significantly.
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Consider which concentrations are involved and how they interact.

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