One method used commercially to peel potatoes is to soak them in a solution of NaOH for a short time, remove them from the NaOH, and spray off the peel

One method used commercially to peel potatoes is to soak them in a solution of NaOH for a short time, remove them from the NaOH, and spray off the peel. The NaOH is analyzed periodically. In one such analysis, 45.7 mL of 0.500 M H2SO4 is required to react completely with a 20.0 mL sample of the NaOH solution. The reaction involved is:

2 NaOH + H2SO4 -----→ Na2SO4 + 2 H2O

a. How many moles of H2SO4 was used in the analysis?

b. Based on the equation, how is NaOH stoichiometrically equivalent to H2SO4?

c. How many moles of NaOH is present in the solution?

d. What is the molarity of the NaOH solution?