7. Consider the titration of 100.0 mL of 0.120 M HNO2 titratedwith 0.100 M NaOH. Determine the pH after each of the followingsituations. Show your calculations explicitly.
a.) No base has been added.
b.) 20.0 mL of NaOH has been added.
c.) 45.0 mL of NaOH has been added.
d.) 80.0 mL of NaOH has been added.
e.) 120.0 mL of NaOH has been added.
f.) 140.0 mL of NaOH has been added.