Chapter 18, Problem 12E

A 250 mL sample of saturated ${\text{CaC}}_{\text{2}}{\text{O}}_{\text{4}}$ (aq) requires 4.8 mL of 0.00134 ${\text{KMnO}}_4\left(\text{aq}\right)$ for its titration ran acidic solution. What is the value of $K_{10}$ , for ${\text{CaC}}_{\text{2}}{\text{O}}_{\text{4}}$ , obtained with these data in the reaction, ${\text{CO}}_{\text{2}}{\text{O}}_{\text{4}}^{\text{2-}}$ is oxidized to CO and ${\text{MnO}}_4$ - is reduced to ${\text{Mn}}^{\text{2-}}$ .