Question

Data set used for this experiment.	1
Concentration of HCl (M)	0.445
Volume of glass cleaner (mL)	25.00

	Volume (mL)	pH
Data point 1 (0.00 mL)	0.00	11.26
Data point 2	2.00	10.73
Data point 3	4.00	10.41
Data point 4	6.00	10.20
Data point 5	8.00	10.07
Data point 6	10.00	9.93
Data point 7	12.00	9.82
Data point 8	14.00	9.71
Data point 9	16.00	9.61
Data point 10	18.00	9.48
Data point 11	20.00	9.38
Data point 12	22.00	9.21
Data point 13	24.00	9.04
Data point 14	26.00	8.84
Data point 15	28.00	8.77
Data point 16	30.00	8.65
Data point 17	32.00	8.60
Data point 18	34.00	8.50
Data point 19	36.00	8.39
Data point 20	38.00	8.20
Data point 21	40.00	7.92
Data point 22	42.00	6.25
Data point 23	44.00	3.81
Data point 24	46.00	3.32
Data point 25	48.00	3.22
Data point 26	50.00	3.13
Data point 27	52.00	3.07

1. Equivalence point (mL) ________

2. Calculate the concentration of the weak base. ________

3. Volume of HCl needed to reach the half of the equivalence point. _______

4. Determine the K_b of the weak base. ________