Given the following electrode systems and their electrode potentials Ca" +2e - Ca(s) É -- 2.87V Fein +2e - Fe(s) E --0.44v Iy +2e – 21 (m) Cr:0 E° -+0.54 V int14H' +6e 2C' +7H:O E-+1.33 V (i) Arrange the following species: Iz, Fe",Cr.0" and Ca in order of decreasing as oxidizing strength. (ii) What would be observed when granules of calcium are added to a solution of potassium dichromate? Write a cell diagram when the calcium and iron half cells are coupled and calculate the emf of the cell. Cell diagram: MeetLearn Cell e.m.f:
Given the following electrode systems and their electrode potentials Ca" +2e - Ca(s) É -- 2.87V Fein +2e - Fe(s) E --0.44v Iy +2e – 21 (m) Cr:0 E° -+0.54 V int14H' +6e 2C' +7H:O E-+1.33 V (i) Arrange the following species: Iz, Fe",Cr.0" and Ca in order of decreasing as oxidizing strength. (ii) What would be observed when granules of calcium are added to a solution of potassium dichromate? Write a cell diagram when the calcium and iron half cells are coupled and calculate the emf of the cell. Cell diagram: MeetLearn Cell e.m.f:
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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Transcribed Image Text:Given the following electrode systems and their electrode potentials
Ca" (a +2e - Ca(s) É -- 2.87V
Fen +2e - Fe(s) E -.0.44v
I +2e - 21 m)
Cr:0
E° -+0.54 V
ingit14H' +6e 2C' +7H:O
E-+1.33 V
(i) Arrange the following species: Iz, Fe",Cr.0" and Ca in order of decreasing as oxidizing strength.
(ii) What would be observed when granules of calcium are added to a solution of potassium dichromate?
Write a cell diagram when the calcium and iron half cells are coupled and calculate the emf of the cell.
Cell diagram:
MeetLearn
Cell e.m.f:
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