Calculate the pH of 1 L of pure water at equilibrium. How will the pH change after 0.008 moles of the strong base NaOH are dissolved in the water? Now, calculate the pH of a 50 mM aqueous solution of the weak acid 3-(N-morpholino) propane- 1-sulfonic acid (MOPS) in which 61% of the solute is in its weak acid form and 39% is in the form of MOPS conjugate base (the pK3 for MOPS is 7.20). What is the final pH after 0.008 moles of NaOH are added to 1 L of this MOPS buffer?