Describe the oxidising action of potassium dichromate and write the ionic equations for its reaction withi Iodideii Ironiii H 2 S

5. A solution of sodium thiosulfate, Na2S2O3, is standardized using pure potassium dichromate, K2Cr2O7. The standardization first involved reaction of 0.2263 grams of K2Cr2O7 with excess KI and excess acid to produce I2 according to the chemical equation:Cr2O7^2-(aq) 6 I^- (aq) 14 H^ (aq) → 2 Cr^3 (aq) 3 I2 (aq) 7 H2O (l)The I2 produced was then titrated with the Na2S2O3 solution; requiring 44.32 mL of the Na2S2O3 solution to reach the end point. The reaction that occurred between I2 a

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SOLVED: 30) The formula weight of potassium dichromate (K2Cr2O7) is amu.

Potassium DichromateUses- Potassium dichromate is a very impo... | Filo

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