Chapter 5, Problem 84IAE

Refer to Example 5-10. Suppose that the ${\text{KMnO}}_{\text{4}}\left(\text{aq}\right)$ were standardized by reaction with ${\text{AS}}_{\text{2}}{\text{O}}_{\text{2}}$ instead of iron wire. If a 0.1304 g sample that is 99.96% ${\text{AS}}_{\text{2}}{\text{O}}_{\text{2}}$ by mass had been used in the titration, how many millimeters of the ${\text{KMnO}}_{\text{4}}\left(\text{aq}\right)$ would have been required?
${\text{AS}}_{\text{2}}{\text{O}}_{\text{3}}{\text{+ MnO}}_{\text{4}}{\text{+ H}}^{\text{+}}{\text{+ H}}_{\text{2}}\text{O}\to {\text{H}}_{\text{3}}{\text{AsO}}_{\text{4}}{\text{+ Mn}}^{\text{2+}}$ (not balanced)