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CHEMACTIVITY 14D: pH AND BUFFERS
POSSIBLE CLICKER QUESTIONS
After CTQ 13:
1. What is [H3O+] in pure water?
2. What is [H3O+] × [OH ] in a solution contaning 0.1 M HCl?
3. What is [OH ] in a solution contaning 0.1 M HCl?
4. Which of the following is used to calculate pH?
5. Which is the correct way to calculate [H3O+] from pH?
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6. A few drops of 2 M NaOH was added to a solution. The pH went from 8.72 to 8.74. The
original solution is probably
7. Which of the following would make a buffer?
8. A buffer is made from NH4
+ and NH3. It will resist changes in pH when a strong acid is added,
because the acid can react with