1. Consider the titration of 50.0 mL of 2.0 M HNO$_3$ with 1.0 M NaOH. At each step of the titration, calculate the pH for the addition of 0.0 mL, 25.0 mL, 50.0 mL, 90.0 mL, 100.0 mL, 110.0 mL and 150.0 mL of 1.0 M NaOH. Sketch a graph of pH vs mL of NaOH added.