Instant Notes: Analytical Chemistry

ln K=0.67/(8.314¥ 298/(1¥ 96485)) =26.09

or K=2.1¥ 1011

Cerium(IV) oxidizes iron(II) almost completely.

Examination of Table 3shows that permanganate will oxidize iron(II) and

oxalate, iodine will oxidize thiosulfate to dithionite, but iodide will be oxidized

by iron(III) to iodine.

C6 – Complexation, solubility and redox equilibria 89