c20J

1. Day 1
Table of pH vs. NaOH volume used in Potentiometric Titration of Mixed Ac
pH BURETTE READING (ml) Volume used (ml) ∑ Volume used (ml)
Initial Volume Final Volume
1.38 0.69 0.00 0.00 0.00
1.36 0.69 1.71 1.02 1.02
1.34 1.71 2.69 0.98 2.00
1.36 2.69 3.71 1.02 3.02
1.38 3.71 4.72 1.01 4.03
1.42 4.72 5.70 0.98 5.01
1.46 5.70 6.73 1.03 6.04
1.50 6.73 7.75 1.02 7.06
1.56 7.75 8.68 0.93 7.99
1.61 8.68 9.69 1.01 pH of solution vs. Volume of N
9.00
1.67 9.69 10.70 14.00 1.01 10.01
1.76 10.70 11.71 1.01 11.02
1.86 11.71 12.79 1.08 12.10
1.99 12.79 13.81 12.00 1.02 13.12
2.16 13.81 14.71 0.90 14.02
2.48 14.71 15.72 1.01 15.03
2.94 15.72 16.68 10.00 0.96 15.99
3.37 16.68 17.74 1.06 17.05
3.62 17.74 18.69 0.95 18.00
3.81 18.69 19.70 8.00 1.01 19.01
3.96 19.70 20.72 1.02 20.03
pH
4.09 20.72 21.79 1.07 21.10
4.20 21.79 22.80 6.00 1.01 22.11
4.29 22.80 23.73 0.93 23.04
4.39 23.73 24.75 1.02 24.06
4.48 24.75 25.73 4.00 0.98 25.04
4.57 25.73 26.79 1.06 26.10
4.65 26.79 27.80 1.01 27.11
4.74 27.80 28.75 2.00 0.95 28.06
4.84 28.75 29.72 0.97 29.03
4.94 29.72 30.71 0.99 30.02
5.05 30.71 31.79 0.00 1.08 31.10
5.18 31.79 32.80 0.00 5.00
1.01 10.00 15.00 32.11 25.00 30.00
20.00
5.33 32.80 33.82 1.02 33.13
Volume of NaOH used
5.49 33.82 34.70 0.88 34.01
5.76 34.70 35.79 1.09 35.10
6.39 35.79 36.88 1.09 36.19
11.25 36.88 38.21 1.33 37.52
11.55 38.21 39.15 0.94 38.46
11.73 39.15 40.13 0.98 39.44
11.84 40.13 41.11 0.98 40.42
11.91 41.11 42.12 1.01 41.43
11.97 42.12 43.10 0.98 42.41

2. ration of Mixed Acid
pH
1.38
1.36
1.34
1.36
1.38
1.42
1.46
1.50
1.56
solution vs. Volume 1.61
of NaOH used
1.67
1.76
1.86
1.99
2.16
2.48
2.94
3.37
3.62
3.81
3.96
4.09 Column F
4.20
4.29
4.39
4.48
4.57
4.65
4.74
4.84
4.94
5.05
.00 20.00 25.00 30.00 35.00 40.00
5.18 45.00
5.33
Volume of NaOH used
5.49
5.76
6.39
11.25
11.55
11.73
11.84
11.91
11.97