alleryStart learning →A cell has a silver cathode at 0.80 V and a copper anode at 0.34 V. What is the standard cell potential?
A1.14 V
B0.46 V
C0.23 V
D0.34 V
Answer & Solution
Correct answer: B. 0.46 V
1. The cell potential is the cathode value minus the anode value.
2. Here that is 0.80 volts minus 0.34 volts.
3. The difference is 0.46 volts, and the positive sign marks a spontaneous cell.
4. Adding the two values instead would give 1.14 volts, which is the common slip here.
_Source: OpenStax Chemistry (CC BY 4.0), Chs 7 and 17, section 17.3 Standard Reduction Potentials_
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