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A 25.00cm3 of potassium dichromate(K2Cr2O7) solution are added to an acidified aqueous solution of potassium iodide(present in excess). The Iodine was then liberated according to the equation K2Cr2O7(aq) + 14H+(aq) + KI(aq) → K+(aq) + Cr3+(aq) + H2O(l) + I2(aq) Required 19.63cm3 of a 0.1478M Na2S2O3 for complete reaction. The equation for the reaction of between Na2S2O3 and I2 is I2(aq) + Na2S2SO3(aq) → Na2S4O6(aq) + NaI(aq) Calculate the concentration of potassium dichromate (only 4 decimal places)? mol/L

A 25.00cm3 of potassium dichromate(K2Cr2O7) solution are added to an acidified aqueous solution of potassium iodide(present in excess). The Iodine was then liberated according to the equation K2Cr2O7(aq) + 14H+(aq) + KI(aq) → K+(aq) + Cr3+(aq) + H2O(l) + I2(aq) Required 19.63cm3 of a 0.1478M Na2S2O3 for complete reaction. The equation for the reaction of between Na2S2O3 and I2 is I2(aq) + Na2S2SO3(aq) → Na2S4O6(aq) + NaI(aq) Calculate the concentration of potassium dichromate (only 4 decimal places)? mol/L

Chemistry: The Molecular Science
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter17: Electrochemistry And Its Applications
Section: Chapter Questions
Problem 38QRT
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A 25.00cm3 of potassium dichromate(K2Cr2O7) solution are added to an acidified aqueous solution of potassium iodide(present in excess). The Iodine was then liberated according to the equation K2Cr2O7(aq) + 14H+(aq) + KI(aq) → K+(aq) + Cr3+(aq) + H2O(l) + I2(aq)

Required 19.63cm3 of a 0.1478M Na2S2O3 for complete reaction. The equation for the reaction of between Na2S2O3 and I2 is

I2(aq) + Na2S2SO3(aq) → Na2S4O6(aq) + NaI(aq)

Calculate the concentration of potassium dichromate (only 4 decimal places)? mol/L

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