CHEM120L Chapter 3: Graphs for Calorimeter Lab (100%)
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30 Dec 2015
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Related Documents
Related Questions
Please find 75% equivalence point, 25% equivalence point, difference in equivalence points, and molecular weight? and based on the results, determine the unknown acid (possibilities: acetic acid, oxalic acid, benzoic acid, maleic acid, malic acid, and KHP).
I did pH vs. NaOH titration curve graph and found the end point as 38.20. The standrdized NaOH(M) was 0.084±0.002 and used unknown acid was 0.6505g.
Below is a data of pH vs. NaOH titration:
V(NaOH), mL | pH |
0 | 3.8 |
2 | 3.92 |
2.5 | 3.92 |
3 | 4.02 |
3.5 | 4.06 |
4 | 4.08 |
4.5 | 4.13 |
5 | 4.15 |
5.5 | 4.18 |
6 | 4.22 |
6.5 | 4.26 |
7 | 4.29 |
7.5 | 4.31 |
8 | 4.34 |
8.5 | 4.37 |
9 | 4.41 |
9.5 | 4.44 |
10 | 4.45 |
10.5 | 4.45 |
11 | 4.53 |
11.5 | 4.55 |
12 | 4.57 |
12.5 | 4.61 |
13 | 4.62 |
13.5 | 4.65 |
14 | 4.67 |
14.5 | 4.68 |
15 | 4.71 |
15.5 | 4.75 |
16 | 4.77 |
16.5 | 4.8 |
17 | 4.83 |
17.5 | 4.83 |
18 | 4.85 |
18.5 | 4.9 |
19 | 4.9 |
19.5 | 4.92 |
20 | 4.95 |
20.5 | 4.98 |
21 | 5.01 |
21.5 | 5.04 |
22 | 5.04 |
22.5 | 5.05 |
23 | 5.07 |
23.5 | 5.09 |
24 | 5.11 |
24.5 | 5.14 |
25 | 5.17 |
25.5 | 5.19 |
26 | 5.22 |
26.5 | 5.26 |
27 | 5.3 |
27.5 | 5.31 |
28 | 5.33 |
28.5 | 5.36 |
29 | 5.39 |
29.2 | 5.42 |
29.4 | 5.43 |
29.6 | 5.44 |
29.8 | 5.45 |
30 | 5.45 |
30.2 | 5.48 |
30.4 | 5.5 |
30.6 | 5.51 |
30.8 | 5.52 |
31 | 5.54 |
31.2 | 5.56 |
31.4 | 5.59 |
31.6 | 5.61 |
31.8 | 5.62 |
32 | 5.64 |
32.2 | 5.66 |
32.4 | 5.68 |
32.6 | 5.71 |
32.8 | 5.73 |
33 | 5.85 |
33.2 | 5.77 |
33.4 | 5.79 |
33.6 | 5.8 |
33.8 | 5.82 |
34 | 5.83 |
34.2 | 5.85 |
34.4 | 5.88 |
34.6 | 5.89 |
34.8 | 5.93 |
35 | 5.96 |
35.2 | 5.98 |
35.4 | 6.02 |
35.6 | 6.05 |
35.8 | 6.08 |
36 | 6.13 |
36.2 | 6.19 |
36.4 | 6.24 |
36.6 | 6.26 |
36.8 | 6.32 |
37 | 6.37 |
37.2 | 6.44 |
37.3 | 6.53 |
37.4 | 6.64 |
37.5 | 6.68 |
37.6 | 6.76 |
37.7 | 6.68 |
37.8 | 7.07 |
37.9 | 7.23 |
38 | 7.57 |
38.05 | 8.07 |
38.1 | 8.14 |
38.15 | 8.42 |
38.2 | 8.7 |
38.25 | 8.92 |
38.3 | 9.16 |
38.35 | 9.38 |
38.4 | 9.51 |
38.45 | 9.64 |
38.5 | 9.74 |
38.55 | 9.85 |
38.6 | 9.93 |
38.65 | 9.97 |
38.7 | 10 |
38.8 | 10.27 |
39 | 10.32 |
39.2 | 10.36 |
39.4 | 10.45 |
39.6 | 10.56 |
39.8 | 10.68 |
40 | 10.78 |
40.5 | 10.92 |
41 | 11.06 |
41.5 | 11.18 |
42 | 11.24 |
42.5 | 11.32 |
43 | 11.37 |
43.5 | 11.4 |
44 | 11.47 |
44.5 | 11.52 |
45 | 11.57 |
45.5 | 11.61 |