Question

I have a titration data table. It wants me to find the approx. pH at the end point. I believe I have the correct answer, but can someone check it out?

Answer 1

NaOH Volume in mL pH
0
10.00 4.15
25.00 4.76
40.00 5.36
49.00 6.45
49.99 8.55
50.00 8.73
50.01 8.89
51.00 11.00
60.00 11.96
75.00 12.30
100.00 12.52

Answer 2

The approx. pH at the end point I got was 8.73. Is this correct?

Answer 3

why 8.73?

Answer 4

do you know the ida behind end point titration?