Preparation and standardization of a 1 M NaOH solution Calculate the following before beginning this task: a. The volume of a stock 6 M NaOH solution required to prepare 250 mL of a 1 M NaOH solution. b. The mass of potassium hydrogen phthalate (KHP) required to react with 25 mL of a 1 M NaOH solution. The molecular weight of KHP is 204.23 g/mol. c. The amount of water required to dissolve the quantity of KHP calculated in (b), given that the solubility of KHP is 10.2 grams per liter.