A solution is made by dissolving 20.0 g of HCl in 800.00 mL of water. Calculate the pH of the solution. If 0.0400 g NaOH is added to 100 mL of this HCl solution, what will the pH be after mixing the 100 ml of HCl solution and the solid NaOH together? Assume the addition of NaOH does not change the volume. (Molar Mass NaOH= 40.00 g/mole : Molar Mass HCl = 36.46 g/mole