From the reaction as shown below, calculate the Standard Cell Potential of a Galvanic Cell that uses the half-reactions shown below.                              Cr3+    +    3e-    ------->     Cr               Eo = -0.73 V                             Al3+    +    3e-    ------->     Al              Eo = -1.66 V

Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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A. 

From the reaction as shown below, calculate the Standard Cell Potential of a Galvanic Cell that uses the half-reactions shown below.

                             Cr3+    +    3e-    ------->     Cr               Eo = -0.73 V

                            Al3+    +    3e-    ------->     Al              Eo = -1.66 V

B.

A galvanic cell is made using 0.25M ZnSO4 and an unknown amount of CuSO4. The cell potential is 105V at 50oC. What is the concentration of CuSO4 in the cathode compartment?

        Zn(s)   +   Cu(aq)2+   ------->   Zn(aq)2+   +   Cu(s)          Eo = 1.10 V

Use:
E = Eo - (RT/nF) + lnQ

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