Chapter 5, Problem 48E

Thiosulfate ion, ${\text{S}}_{\text{2}}{\text{O}}_{\text{3}}^{\text{2}}$ , is a reducing agent can be oxidized to different products, depending on the strength of the oxidizing agent and other conditions. By adding H^', ${\text{H}}_{\text{2}}\text{O}$ , and/or OH- as necessary, write redox equations to show the oxidation of ${\text{S}}_{\text{2}}{\text{O}}_{\text{3}}^{\text{2}}$ to
a. ${\text{S}}_{\text{4}}{\text{O}}_{\text{6}}^{\text{2-}}$ by I₂(iodide ion is another product)
b. ${\text{HSO}}_4$ by CI₂(iodide ion is another product)
c. ${\text{SO}}_4^{2-}$ , by OCI- basic solution (chloride ion is another product)