The electrode potential of the standard hydrogen electrode is assigned a value of
- A. 0.00 volts by convention
- B. 1.00 volt
- C. minus 1.00 volt
- D. 0.76 volts
Explanation
No single electrode potential can be measured in isolation, so the hydrogen electrode is defined as zero and every other potential is quoted relative to it. The value 0.76 volts is the standard potential of the zinc electrode measured against it, which is why it appears as a distractor. The conditions specified are 1 molar hydrogen ions, 1 atmosphere of hydrogen gas and 298 K.