experimental data. See the following example:
Data Table 1: Titration of Vinegar with Sodium Hydroxide
Vinegar Sample 1
Vinegar Sample 2
Vinegar Sample 3
Mass of Vinegar g
4.8
4.9
5.0
Volume of Vinegar
Density = 1.005 g/mL
134
130
136
Initial NaOH volume in
syringe ml
8.9
9.5
10
Final NaOH volume in
syringe ml
5.2
4.3
5
Volume of NaOH
Delivered ml
3.8
5.2
5
Moles of NaOH Delivered M
1.201
1.01
.79
Moles of Acetic Acid in
Sample
.807
0.802
0.809
Mass of Acetic Acid in
Sample
1.01
1.01
1.01
Calculated Molarity of
Acetic Acid in the sampled
vinegar
0.807
0.802
0.809
Calculated Percent Mass
of Acetic Acid in sampled
vinegar
4.3
4.9
4.89
Average
Calculated
Percent Mass of Acetic
Acid in Sampled Vinegar
4.6%
Activity 2: Titration of an Unknown Vinegar Sample with
Sodium
Hydroxide
Data Table 2: Titration of Second Vinegar Sample with Sodium Hydroxide
Name of Vinegar Sample
Vinegar Sample 1
Vinegar Sample 2
Vinegar Sample 3

3
Mass of Vinegar g
4.97
5.1
4.8
Volume of Vinegar
Density = 1.005 g/mL
130
139
134
Initial NaOH volume in
syringe
ml
10
9.6
10.2
Final NaOH volume in
syringe
3.8
3.5
4.1
Volume of NaOH
Delivered ml
6
7.2
7.9
Moles of NaOH Delivered
0.094M
.096M
.095M
Moles of Acetic Acid in
Sample
0.85M
0.84M
0.846M
Mass of Acetic Acid in
Sample
2.02g
2.02g
2.02g
Calculated Molarity of
Acetic Acid in the sampled
vinegar
0.792M
0.789M
0.790M
Calculated Percent Mass
of Acetic Acid in sampled
vinegar
3.9%
3.49%
3.72%
Average
Calculated
Percent Mass of Acetic
Acid in Sampled Vinegar
3.6%
Activity 3: Calculations of pK
a
from Sample Lab Data


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- Spring '18
- Vishal Sharma
- pH, Sodium hydroxide, vinegar sample, Vinegar g