1. The following cell is made at 25 o C. Which of the equations below could be u
ID: 923316 • Letter: 1
Question
1. The following cell is made at 25oC. Which of the equations below could be used to calculate E for this cell?
Mn(s), Mn2+ (0.050M), Fe3+ (0.10M), Fe2+ (0.20M)
2. A concentration cell is made using two Ni electrodes with Ni2+ concentrations of 1.0 M and 1.0x10-4 M in the two half-cells. Which of these statements about this cell is false?
The 1.0x10-4 M Ni2+ solution is in the anode half-cell.
Eo for the overall reaction is 0 V.
The overall cell potential will be -.26 V.
When the cell reaction reaches equilibrium, the Ni2+ concentrations will be equal.
3. Which of these metals could act as a sacrificial anode for iron?
Pb
Co
Mg
4. How many minutes would it take for 2.15 grams of nickel to be plated from a Ni2+ solution if the current is 0.850 amps? (Molar mass of nickel is 58.69 g/mol)
a.The 1.0x10-4 M Ni2+ solution is in the anode half-cell.
b.Eo for the overall reaction is 0 V.
c.The overall cell potential will be -.26 V.
d.When the cell reaction reaches equilibrium, the Ni2+ concentrations will be equal.
Explanation / Answer
1. The following cell is made at 25 o C. Which of the equations below could be u
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