Data Table 1. Adding 0.1M HCl from D1 intoA1.
Drop Number | pH of Solution |
1 | 5.0 |
2 | 5.0 |
3 | 5.0 |
4 | 5.0 |
5 | 5.0 |
6 | 5.0 |
7 | 5.0 |
8 | 5.0 |
9 | 5.0 |
10 | 5.0 |
11 | 5.0 |
12 | 5.0 |
13 | 5.0 |
14 | 5.0 |
15 | 5.0 |
Data Table 2. Adding 0.1M NaOH from D6 intoA6.
Drop Number | pH of Solution |
1 | 6.0 |
2 | 6.0 |
3 | 6.0 |
4 | 6.0 |
5 | 6.0 |
6 | 6.0 |
7 | 6.0 |
8 | 6.0 |
9 | 6.0 |
10 | 6.0 |
11 | 6.0 |
12 | 6.0 |
13 | 6.0 |
14 | 6.0 |
15 | 6.0 |
Data Table 3. Adding 6M HCl from Pipet intoB1.
Drop Number | pH of Solution |
1 | 4.0 |
2 | 4.0 |
3 | 3.0 |
4 | 2.0 |
5 | 2.0 |
Data Table 4. Adding 6M NaOH from Pipet intoB6.
Drop Number | pH of Solution |
1 | 6.0 |
2 | 6.0 |
3 | 6.0 |
4 | 6.0 |
5 | 6.0 |
Data Table 5. Adding 0.1M HCl from D1 intoC1.
Drop Number | pH of Solution |
1 | 2 |
2 | 2 |
3 | 2 |
4 | 2 |
5 | 2 |
Data Table 6. Adding 0.1M NaOH from D6 intoC6.
Drop Number | pH of Solution |
1 | 8.0 |
2 | 8.0 |
3 | 8.0 |
4 | 8.0 |
5 | 8.0 |
Questions
(5pts) Discuss if you saw a buffer. Definebuffer and explain, with complete sentences, what you didto shift that buffer.
(10pts) A buffer was established with 2.0mL of 0.833M aceticacid. 0.5mL of 0.1M HCl is added. What is the new pH of the buffer?Ka of acetic acid = 1.8 x 10-5 Show your work.
Discuss in a complete sentence how your theoretical calculationhere is the same or different than what was obtained in Data Table5.
