A galvanic cell is made using 0.25M ZnSO4 and an unknown amount of CuSO4. The cell potential is 105V at 50oC. How many grams of CuSO4 is dissolved if the cathode compartment contains 250ml of the solution? Zn(s) + Cu(aq)2+ -------> Zn(aq)2+ + Cu(s) Eo = 1.10 V Use: E = Eo - (RT/nF) + lnQ
a. A galvanic cell is made using 0.25M ZnSO4 and an unknown amount of CuSO4. The cell potential is 105V at 50oC. How many grams of CuSO4 is dissolved if the cathode compartment contains 250ml of the solution?
Zn(s) + Cu(aq)2+ -------> Zn(aq)2+ + Cu(s) Eo = 1.10 V
Use:
E = Eo - (RT/nF) + lnQ
Answer must be in 4 decimal places.
b. Calculate the cell potential of the indicated reaction as shown below.
Ni(OH)2 <-------> Ni2+ + 2OH- Ksp = 1.6 x 10-16
Ni2+ + 2e- --------> Ni Eo = -0.23 V
Ni + 2OH- ---------> Ni(OH)2 + 2e- Eo = ?
Use:
F = 96485 Coulombs/mole
R = 8.31446
Answer must be in 3 decimal places.
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