calculate the ph during the titration of 40.00 mL of .1000 M HCL with .1000 M NaOH solution after each of the following additions of base:
a) 0 mL
b) 20.00 mL
c) 39.00 mL
d)39.90 mL
e) 40.00 mL
f) 40.10 mL
g) 50.00 mL