Time (sec.) pH of distilled water pH of buffered solution 20 7.99 8.61 40 7.46 8.43 60 7.15 8.31 80 6.75 8.22 100 6.54 8.16 120 6.39 8.10 140 6.22 8.05 160 6.11 8.01 180 6.03 7.97 Conclusion Explain your observations from the data table. Which resists a change in pH the most, water or the buffered solution? Give reasons. When you blow into the water, the pH goes up. Is the solution becoming more basic or acidic? A buffer is usually made of a weak acid and a weak base. When you blow into a buffer the pH doesn’t change. What do you think is happening?
Time (sec.) pH of distilled water pH of buffered solution 20 7.99 8.61 40 7.46 8.43 60 7.15 8.31 80 6.75 8.22 100 6.54 8.16 120 6.39 8.10 140 6.22 8.05 160 6.11 8.01 180 6.03 7.97 Conclusion Explain your observations from the data table. Which resists a change in pH the most, water or the buffered solution? Give reasons. When you blow into the water, the pH goes up. Is the solution becoming more basic or acidic? A buffer is usually made of a weak acid and a weak base. When you blow into a buffer the pH doesn’t change. What do you think is happening?
Chapter14: Principles Of Neutralization Titrations
Section: Chapter Questions
Problem 14.29QAP
Related questions
Question
|
Time (sec.)
|
pH of distilled water |
pH of buffered solution |
|
20 |
7.99 |
8.61 |
|
40 |
7.46 |
8.43 |
|
60 |
7.15 |
8.31 |
|
80 |
6.75 |
8.22 |
|
100 |
6.54 |
8.16 |
|
120 |
6.39 |
8.10 |
|
140 |
6.22 |
8.05 |
|
160 |
6.11 |
8.01 |
|
180 |
6.03 |
7.97 |
Conclusion
- Explain your observations from the data table.
- Which resists a change in pH the most, water or the buffered solution? Give reasons.
- When you blow into the water, the pH goes up. Is the solution becoming more basic or acidic?
A buffer is usually made of a weak acid and a weak base. When you blow into a buffer the pH doesn’t change. What do you think is happening?
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