Acids and Bases Review Homework. STUDY. PLAY. What is the pOH of a 0.0001 M NaOH solution? 4. What is the (OH-) of a 0.001 M HCl Solution? 1E-11. What is the volume of 2.0 mols of HCl in 5.0 M of solution in milliliters? 400ml. A 25.00 mL sample of ammonium nitrate solution produces a 0.186 M solution when diluted with 50.00 mL of water. What is the molarity of the stock solution? not .0930 M.