A certain half-reaction has a standard reduction potential E_red^0 = -0.94 V. An

Question

A certain half-reaction has a standard reduction potential E_red^0 = -0.94 V. An engineer proposes using this half-reaction at the cathode of a galvanic cell that E must provide at least 1.00 V of electrical power. The cell will operate under standard conditions. Is there a minimum standard reduction potential that the half-reaction used at the anode of this cell can have? yes, there is a minimum. E_red^0 = v If so, check the "yes" box and calculate the minimum. Round your answer to 2 decimal places. If there is no lower limit, check the "no" box. no minimum 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_red^0 = v If so, check the "yes" box and calculate the maximum. Round your answer to 2 no maximum decimal places. If there is no upper limit, check the "no" box. no maximum 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.

Explanation / Answer

Eocell = Eo cathode - Eo anode

Eo cell > 1.00 V

So,

Eo cathode - Eo anode > 1.00

-0.94 - Eo anode > 1.00

Eo anode < -1.94 V

1)

there is no minimum

2)

yes there is maximum

Eored = -1.94 V

3)

Eo red for K+/K is -2.93 V

we can use:

K (s) —> K+(aq) + e-

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