Bleaching powder and bleach solution are produced on a large scale and used in several household products. The effectiveness of bleach solution is often measured by iodometry. Question: 25 ~mL of household solution was mixed with 30 ~mL of 0.50 M KI and 10 ~mL of 4 ~N acetic acid. In the titration of the liberated iodine, 48 ~mL of 0.25 ~N~ Na ₂ ~S ₂ O ₃ was used to reach the end point. The molarity of the household