Chapter 5, Problem 63E

A KMnO₄(eq) solution is to be standardized by titration against ${\text{AS}}_{\text{2}}{\text{C}}_{\text{2}}$ (s). A 0.1078 g sample of ${\text{AS}}_{\text{2}}{\text{C}}_{\text{2}}$ requires 22.15 mL of the ${\text{KMnO}}_{\text{4}}\left(\text{eq}\right)$ for itstitration. What is the molarity of the ${\text{KMnO}}_{\text{4}}\left(\text{aq}\right)\text{?}$
${\text{5AS}}_{\text{2}}{\text{O}}_{\text{3}}{\text{+4MnO}}_{\text{4}}{\text{+9H}}_{\text{2}}{\text{O+12H}}^{\text{+}}\to {\text{10H}}_{\text{3}}{\text{AsO}}_{\text{4}}{\text{+4Mn}}^{\text{2+}}$