Question

In acid base titration lab.... Which substance, the hot sauce or ketchup, contained the most acid per gram?

Why was it important to know the exact concentration of the base used in the titration?

***Lab consisted of a 20 mL DH2O AND 1.5 g hotsauce mixture for trial 1, and 20 mL DH20 and 1.5 g ketchup mixture for trial 2. First column is mL's of NaOH added to the mixture, second column is the pH.

TRIAL1-

0.00 3.50 0.49

0.5 3.76 0.44

1.0 3.98 0.37

1.5 4.13 0.31

2.0 4.27 0.26

2.5 4.39 0.24

3.0 4.50 0.23

3.5 4.62 0.23

3.75 4.68 0.22

4.0 4.73 0.21

4.25 4.78 0.21

4.5 4.83 0.22

4.75 4.89 0.23

5.0 4.95 0.23

5.25 5.01 0.24

5.5 5.07 0.26

5.75 5.13 0.28

6.0 5.21 0.31

6.25 5.29 0.33

6.5 5.37 0.37

6.75 5.47 0.44

7.0 5.58 0.54

7.25 5.72 0.73

7.5 5.93 1.13

7.75 6.20 2.00

8.0 6.70 3.59

8.25 8.05 4.84

8.5 9.60 4.25

8.75 10.38 2.75

9.0 10.83 1.59

9.25 11.09 0.90

9.5 11.27 0.55

10.0 11.49 0.39

10.5 11.64 0.30

11.0 11.75 0.24

TRIAL 2-

0.0 3.95 0.50

0.5 4.21 0.49

1.0 4.45 0.48

1.5 4.68 0.47

2.0 4.91 0.49

2.25 5.04 0.56

2.5 5.19 0.66

2.75 5.36 0.85

3.0 5.59 1.26

3.25 5.89 2.12

3.5 6.45 3.57

3.75 7.85 4.28

4.0 9.01 3.42

4.25 9.61 2.22

4.5 9.98 1.42

4.75 10.26 0.96

5.0 10.47 0.67

5.5 10.75 0.52

6.0 10.94 0.44

Answer 1