How to prepare redox indicator using 2,2'-Bipyridine?
Jun 29，2026
For preparing redox indicator, add 0.695 g Ferrous sulphate heptahydrate (FeSO4 7H2O) and 1.171 g 2,2'-Bipyridine in 100 mL water. It is used for testing iron(II) and molybdenum, changes from a deep red color in its reduced state to a light blue color in its oxidized state.
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