An aqueous solution of propionic acid, CH3CH2COOH, is prepared in the laboratory by dissolving 3.6 g of the acid in a liter of solution.

An aqueous solution of propionic acid, CH3CH2COOH, is prepared in the laboratory by dissolving 3.6 g of the acid in a liter of solution. In a titration of this acid with an aqueous solution of NaOH, 25.00 mL of the acid required 12.15 mL of a 0.100 M aqueous NaOH solution for complete neutralization using phenolphthalein as indicator. What is the mole of NaOH required to completely react with the 25.00 mL aliquot of the acid?