An old container of KOH has been found in the chemistry lab. A 4.00 g sample of this impure KOH is dissolved in 30.0 mL of 2.500 M HCI, transferred to a 250 0 mL volumetric flask and diluted to the mark with distilled water. A 15.00 mL sample of the resulting solution is pipetted into an Erlenmeyer flask and titrated with 4.32 mL of standardized 0.120 MNaOH. Determine the percent purity of the sample of KOH found in the lab (Molar mass of KOH = 56.1 g/mol).