# Redox titrations

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**Find the full equation and concentration of substances in a redox titration.**

A solution containing Co^{2+}ions of unknown concentration is made. 25mL of this Co^{2+}solution was measured and was titrated by 0.25M MnO_{4}^{-}solution until equivalence point was reached. An average titre of 16.20 mL MnO_{4}^{-}solution was required. The reaction produces Mn^{2+}and Co^{3+}ions.

Write the full redox equation for this reaction and find the concentration of the aqueous Co^{2+}solution.**Find the full equation and concentration of substances in a redox titration.**

A solution containing I^{-}ions of unknown concentration is made. 25mL of this solution is measured precisely and is titrated by 0.18M MnO_{4}^{-}solution until the equivalence point is reached. This is repeated, to find an average titre of 19.55 mL MnO_{4}^{-}solution being needed to completely react the I^{-}ions.

Write the full redox equation for this reaction and find the concentration of the aqueous I^{-}solution.