MCQ
Which of the following has been universally accepted as a reference electrode at all temperatures and has been assigned a value of zero volt
- AGraphite electrode
- BCopper electrode
- CPlatinum electrode
- ✓Standard hydrogen electrode
✓
Answer
Correct option: D.
Standard hydrogen electrode
d
Hydrogen electrode is the primary standard electrode. The hydrogen electrode can act as cathode or anode with respect to other electrode.
Hydrogen electrode is the primary standard electrode. The hydrogen electrode can act as cathode or anode with respect to other electrode.
$H_2 \rightarrow 2 H^{+}+2 e^{-}(\text {Anode })$
$2 H^{+}+2 e^{-} \rightarrow H_2 \text { (cathode) }$
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