The stoichiometric point during the titration of 10.0 mL of an HCl solution ocurrs when 28.5 mL of 0.1 M NaOH is added. Calculate the initial concentration of the HCl solution. Calculate the pH of the HCl solution prior to adding NaOH, the pH at the halfway point, and the pH at the stoichiometric point. Draw the titration curve with pH on the y-axis and volume of NaOH added on the x-axis. Label this curve with the pH's calculated above and the appropriate volumes of added NaOH.