1-If 10.7 mL of 0.105 M NaOH is required to reach the first equivalence point of a solution of 0.050 M citric acid, a triprotic acid, how many mL (total) of NaOH are required to completely titrate all three of citric acid's protons?
a. 32.1 mL
b. 18.0 mL
c. 22.5 mL
d. 5.1 mL
2-How many moles of NaOH will react completely (titrate both protons) with 50.0 mL of 0.850 M H2SO3.
a. .0425 moles
b. 42.5 moles
c. .0850 moles
d. 85.0 moles