a) Write the reaction equations for the step-wise neutralization of citric acid with NaOH.

b) Suppose 0.20 mol of citric acid and 0.31 mol sodium hydroxide were reacted in 0.50 L of aqueous solution. Calculate the molar concentrations of the anions of citric acid that will appear in this solution.

c) In another experiment, 1.76 g of citric acid is reacted with 5.00 mL of 30.0% (by mass) aqueous solution of NaOH (d = 1.333 g/cm3 ). Evaporation of the reaction solution to dryness gave a mixture of two solid ionic compounds. Identify each compound in the final mixture and predict their masses in grams.