Exercise 20.28 For the reaction that occurs in the voltaic cell Fe(s)|Fe2+(aq)||

Question

Exercise 20.28

For the reaction that occurs in the voltaic cell Fe(s)|Fe2+(aq)||Cr3+(aq),Cr2+(aq)|Pt(s)

Exercise 20.28 Part A For the reaction that occurs in the voltaic cell Fe(s) Fe2 (aq)l|Cr (aq), Cr2 (a) Pt(s) use data from Appendix D in the textbook to answer the following question:s Determine the equation for the cell reaction Express your answer as a net ion equation. Identify all of the phases in your answer. Fe(s) + 2Cr3 (aq)-Fe2+2Cr2(aq) Submit My Answers Give Up Correct Part B Determine l Determine Fell Express your answer using two significant figures. o16-10-2 v Submit My Answers Give Up Correct

Explanation / Answer

DG0 = -nFE0cell

     = -2*96500*0.016

     = -3.1 kj/mol

dg0 = -RTlnK

-3088 = -8.314*298*lnk

K = 3.5

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