Potassium dichromate is often used to standardize reducing agents like Fe2** Cr207 + 6Fe2+ + 14 H* → 2Cr* + 6 Fe* + 7H2O If 34.00 mL of an iron(II) solution were required to titrate a sample containing 398.5 mg of pure K2Cr2O7 (MM= 294.185 ),calculate the molar concentration of Fe²*

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