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

Consider a titration of potassium dichromate solution with acid... | Filo

SOLVED: Potassium dichromate is used to titrate a sample containing an unknown percentage of iron. The sample is dissolved in H3PO4/H2SO4 mixture to reduce all of the iron to Fe2 ions. The solution is then titrated with 0.01625 M K2Cr2O7, producing Fe3 and Cr3 ions in acidic solution. The titration requires 32.26 mL of K2Cr2O7 for 1.2765 g of the sample. (a) Balance the net ionic equation using the half-reaction method. (b) Determine the percent iron in the sample. (c) What is the indicator u

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

Potassium Dichromate | Definition, Formula & Molar Mass

K2Cr2O7 (Potassium dichromate): Structure, Molecular Mass, Properties and Uses