For the reaction that occurs in the voltaic cell F e ( s ) | F e 2 + ( a q ) | |

Question

For the reaction that occurs in the voltaic cell
Fe(s)|Fe2+(aq)||Cr3+(aq),Cr2+(aq)|Pt(s)
use data from Appendix D in the textbook to answer the following questions.

1. Determine the equation for the cell reaction

2. Determine

E0cell

3.Determine

%u0394G0.

4.Determine

K5.

5. Determine whether the reaction goes substantially to completion when the reactants and products are initially in their standard states.

- This reaction will go to completion

- This reaction will not go to completion

Thank you ahead of time for any help!!

0cell0cell

Explanation / Answer

1.)Fe + 2e- %u2192 Fe2+ (+0.44)

Cr3+ (aq) + e- %u2192 Cr2+ (aq) (-0.41)

2.)Ecell=0.44-0.41=0.03

3.)deltaG=-nFEcell=-2*96485*0.03=5.789 KJ/mol

4.)Ecell=(RT/nF)ln(K)

So 0.03=(8.314*298/96485*2)ln(K)

So K=10.34

5.)This reaction will go to completion since deltaG is negative

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