Question

Mass of beaker: 59

Mass of beaker and citric acid: 61

Mass of beaker and citric acid (after cooling): 61.06 or 61.1

Volume of NaOH: 15mL

Syringe Reading, mL	Citric acid added, mL	pH
30	2	11.20
28	3	10.81
27	4	10.21
26	5	10.
25	6	9.58
24	7	8.35
22	9	7.02
20	11	6.72
19	12	6.68
18	13	6.39
17	14	6.12
16	15	5.77
15	16	5.72
14	17	5.66
13	18	5.22

Syringe Reading, mL	Citric acid added, mL	pH
30	1	11.24
29	2	10.78
28	3	10.48
27	4	10.12
26	5	9.92
25	6	9.82
24	7	7.96
23	8	7.46
21	10	6.83
19	11	6.75
18	12	6.65
17	13	6.21
16	14	5.82
15	15	5.63
14	16	5.42

Mass of citric acid: 2g

Moles of citric acid: 0.0104

(MW = 192.0 g/mol)

Molarity of citric acid: 0.104M

(volume of solution = 100 mL)

Trial 1 equivalence point: 10+7=17/2= 8.5

Trial 2 equivalence point:10+7=17/2=8.5

Molarity (Trial 1):

Molarity (Trial 2):

Average Molarity:

I need help calculating the molarity of the citric acid per trial, please help and show work.