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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

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
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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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
OPPGAVE 2 (25%) Massen til en fast jernbit Fe(s) skal fastsettes ved å la den reagere med en oppløsning av 0.500 L kaliumdikromat K₂Cr₂O7 (aq) i en redoksreaksjon i sur løsning, slik at alt jern blir oksidert til jern(II)-ioner, Fe²+ (aq). Det dannes samtidig krom(III)-ioner, Cr³+ (aq), etter reduksjonslikningen: Cr₂0²¯(aq) + 14H*(aq) + 6e¯ → 2Cr³+ (aq) + 7H₂O(l)
Transcribed Image Text:OPPGAVE 2 (25%) Massen til en fast jernbit Fe(s) skal fastsettes ved å la den reagere med en oppløsning av 0.500 L kaliumdikromat K₂Cr₂O7 (aq) i en redoksreaksjon i sur løsning, slik at alt jern blir oksidert til jern(II)-ioner, Fe²+ (aq). Det dannes samtidig krom(III)-ioner, Cr³+ (aq), etter reduksjonslikningen: Cr₂0²¯(aq) + 14H*(aq) + 6e¯ → 2Cr³+ (aq) + 7H₂O(l)
a) Skriv den fullstendige og balanserte reaksjonslikningen for redoksreaksjonen hvor jernbiten blir oksidert til jern(II)-ioner av dikromationene i løsningen. b) En prøve av reaksjonsløsningen etter at oksideringen av jern er fullført viser at den molare konsentrasjonen av Cr³+- ioner er 0.0162 M. Hva er den beregnede massen av jernbiten Fe(s) i gram? c) Hva er mengden elektroner e¯ i mol som overføres i denne spesifikke reaksjonen? Beregn det elektriske arbeidet wel oksidasjonen av jernbiten har skapt i kilojoule (kJ), ved å bruke vedlagte elektrodepotensialer Eº og formelen: Wel = -ne-X Fx Ecelle с Oppgitt: Ecelle Ecr - Ee. F = 96 485- = (Faradays konstant). Energi: 1 ] = 1C XV. 'Fe mol e-
Transcribed Image Text:a) Skriv den fullstendige og balanserte reaksjonslikningen for redoksreaksjonen hvor jernbiten blir oksidert til jern(II)-ioner av dikromationene i løsningen. b) En prøve av reaksjonsløsningen etter at oksideringen av jern er fullført viser at den molare konsentrasjonen av Cr³+- ioner er 0.0162 M. Hva er den beregnede massen av jernbiten Fe(s) i gram? c) Hva er mengden elektroner e¯ i mol som overføres i denne spesifikke reaksjonen? Beregn det elektriske arbeidet wel oksidasjonen av jernbiten har skapt i kilojoule (kJ), ved å bruke vedlagte elektrodepotensialer Eº og formelen: Wel = -ne-X Fx Ecelle с Oppgitt: Ecelle Ecr - Ee. F = 96 485- = (Faradays konstant). Energi: 1 ] = 1C XV. 'Fe mol e-
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