The mass of a solid piece of iron Fe(s) should be determined by allowing it to react with a solution of 0.500 L potassium dichromate K2Cr2O7 (aq) in a redox reaction in acidic solution, so that all iron is oxidized into iron (II) ions, Fe2+(aq). Concomitant chromium(III) ions, Cr3+(aq), after the reduction equation: Cr2O7 2−(aq) + 14H +(aq) + 6e − → 2Cr3+(aq) + 7H2O(l) a) Write the complete and balanced reaction equation for the redox reaction where the piece of iron is oxidized into iron (II) ions by the dithromations in the solution. b) A sample of the reaction solution after the oxidation of iron is completed shows that the molar concentration of Cr3+ ions is 0.0162 M. What is the calculated mass of the piece of iron Fe(s) in grams? c) What is the amount of electrons e − in moles transmitted in this specific reaction? Calculate the electrical work wel the oxidation of the piece of iron has created in kilojoules (kJ), using the enclosed electrode potentials E 0 and the formula: if possible, I would like handwritten answers with calculations. Thanks :) equations and formulas are highlighted in image attachments
The mass of a solid piece of iron Fe(s) should be determined by allowing it to react with a solution of 0.500 L potassium dichromate K2Cr2O7 (aq) in a redox reaction in acidic solution, so that all iron is oxidized into iron (II) ions, Fe2+(aq). Concomitant chromium(III) ions, Cr3+(aq), after the reduction equation: Cr2O7 2−(aq) + 14H +(aq) + 6e − → 2Cr3+(aq) + 7H2O(l) a) Write the complete and balanced reaction equation for the redox reaction where the piece of iron is oxidized into iron (II) ions by the dithromations in the solution. b) A sample of the reaction solution after the oxidation of iron is completed shows that the molar concentration of Cr3+ ions is 0.0162 M. What is the calculated mass of the piece of iron Fe(s) in grams? c) What is the amount of electrons e − in moles transmitted in this specific reaction? Calculate the electrical work wel the oxidation of the piece of iron has created in kilojoules (kJ), using the enclosed electrode potentials E 0 and the formula: if possible, I would like handwritten answers with calculations. Thanks :) equations and formulas are highlighted in image attachments
Chemistry & Chemical Reactivity
9th Edition
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter21: The Chemistry Of The Main Group Elements
Section: Chapter Questions
Problem 86GQ: In 1774, C. Scheele obtained a gas by reacting pyrolusite (MnO2) with sulfuric acid. The gas, which...
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The mass of a solid piece of iron Fe(s) should be determined by allowing it to react with a solution of 0.500 L potassium dichromate K2Cr2O7 (aq) in a redox reaction in acidic solution, so that all iron is oxidized into iron (II) ions, Fe2+(aq). Concomitant chromium(III) ions, Cr3+(aq), after the reduction equation:
Cr2O7 2−(aq) + 14H +(aq) + 6e − → 2Cr3+(aq) + 7H2O(l)
a) Write the complete and balanced reaction equation for the redox reaction where the piece of iron is oxidized into iron (II) ions by the dithromations in the solution.
b) A sample of the reaction solution after the oxidation of iron is completed shows that the molar concentration of Cr3+ ions is 0.0162 M. What is the calculated mass of the piece of iron Fe(s) in grams?
c) What is the amount of electrons e − in moles transmitted in this specific reaction? Calculate the electrical work wel the oxidation of the piece of iron has created in kilojoules (kJ), using the enclosed electrode potentials E 0 and the formula:
if possible, I would like handwritten answers with calculations. Thanks :)
equations and formulas are highlighted in image attachments
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