The strength of solution of an element whose electrode potential is to be measured is________________?
Correct answer: D. 1M
- A. 2M
- B. 1N
- C. 1m
- D. 1M
Explanation
Standard electrode potentials are measured under standard conditions, including a dissolved ionic concentration of 1 M. The symbol 1m represents molality, not the usual standard concentration convention used here. The likely wrong choice is 1N, because normality is not the standard unit specified for electrode potentials.
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About Standard Hydrogen Electrode
The standard hydrogen electrode provides the reference potential of 0.00 V for measuring electrode potentials. It consists of platinum in contact with hydrogen gas at standard pressure and hydrogen ions at standard concentration, usually at 25°C, and can operate as either the oxidation or reduction half-cell.
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