Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter16: Reactions Between Acids And Bases
Section: Chapter Questions
Problem 16.54QE
Related questions
Question
|
Titration A |
|
|
HCl Titrated with NaOH |
|
|
Volume of NaOH |
pH |
|
0.0 |
1.00 |
|
5.0 |
1.18 |
|
10.0 |
1.37 |
|
15.0 |
1.60 |
|
20.0 |
1.95 |
|
21.0 |
2.06 |
|
22.0 |
2.19 |
|
23.0 |
2.38 |
|
24.0 |
2.69 |
|
25.0 |
7.00 |
|
26.0 |
11.29 |
|
27.0 |
11.58 |
|
28.0 |
11.76 |
|
29.0 |
11.87 |
|
30.0 |
11.96 |
|
35.0 |
12.22 |
|
40.0 |
12.36 |
|
45.0 |
12.46 |
|
50.0 |
12.52 |
|
Titration B |
|
|
HC2H3O2 Titrated with NaOH |
|
|
Volume of NaOH |
pH |
|
0.0 |
2.87 |
|
5.0 |
4.14 |
|
10.0 |
4.56 |
|
15.0 |
4.92 |
|
20.0 |
5.34 |
|
21.0 |
5.46 |
|
22.0 |
5.61 |
|
23.0 |
5.80 |
|
24.0 |
6.12 |
|
25.0 |
8.87 |
|
26.0 |
11.30 |
|
27.0 |
11.56 |
|
28.0 |
11.75 |
|
29.0 |
11.87 |
|
30.0 |
11.96 |
|
35.0 |
12.22 |
|
40.0 |
12.36 |
|
45.0 |
12.46 |
|
50.0 |
12.52 |
1. Titration A, endpoint pH =
Titration B, endpoint pH =
2. pKa or pKb =
3. Ka or Kb =
4. Why no K asked for Titration A?
5. Write the value of pKa and Ka that you determined from your graph.
6. If the actual pKa was 4.718, determine the percent error. If the actual Ka was 1.815x10-5, determine the percent error.
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