Please type work, I will up vote, thank you.

3. An acid-base titration is a technique used to determine the concentration of an aqueous solution of an acid or base. In a lab setting, a technician monitors the pH of an HCl aqueous solution after adding NaOH. Considering that the initial concentration and volume of HCl are 0.050M and 10.mL, respectively, and the reaction between HCl and NaOH has a 100% yield. Determine the pH after the addition of: a) 0.0mol of NaOH. b) 2.5104mol of NaOH. c) 5104mol of NaOH. d) 7.5104mol of NaOH