Another method for creating a buffer, in situ, is to add an appropriate amount of a strong base, e. g., NaOH, to a weak acid OR add an appropriate amount of a strong acid, e. g., HNO3, to a weak base. As an example, mixing 1.0 mol of acetic acid with 0.5 mol of NaOH will result in a buffer solution with 0.5 mol of acetic acid and 0.5 mol of acetate. The acetate is created by the reaction of acetic acid and the strong base, hydroxide. Given this information, which of the following, when mixed with the appropriate amount of HCl, would create a buffer solution? a. HNO3
b. HClO2
c. LiCl
d. NH3