A certain half-reaction has a standard reduction potential Fed +0.56 V. An engin

Question

A certain half-reaction has a standard reduction potential Fed +0.56 V. An engineer proposes using this half-reaction at the cathode of a galvanic cell that must provide at least 1.10 V of electrical power. The cell will operate under standard conditions. Note for advanced students: assume the engineer requires this half-reaction to happen at the cathode of the cell Is there a minimum standard reduction potential that the half-reaction used at the anode of this cell can have? o yes, there is a minimum. If so, check the "yes" box and calculate the minimum. Round your answer to 2 o no decimal places. If there is no lower limit, check the "no" box. Is there a maximum standard reduction potential that the half-reaction used at the anode of this cell can have? yes, there is a maximum. E.-DV red If so, check the "yes" box and calculate the maximum. Round your answer to 2 check the no boxnere is no upper limit, no maximum check the "no" box. By using the information in the ALEKS Data tab, write a balanced equation describing a half reaction that could be used at the anode of this cell, Note: write the half reaction as it would actually occur at the anode.

Explanation / Answer

E0cell = E0cathode - E0anode

1.1 = 0.56 - x

x = E0enode = -0.54 V

no minimum.

yes,there is a maximum. E0red = -0.54 v

half-cell reaction, that can be used at anode.

electrode : Zn^2+   + 2e- ----> Zn(s) E0red = -0.76 v

reaction at anode = oxidation

Zn(s)   -------> Zn^2+   + 2e-

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