Standard hydrogen electrode (SHE) is a
A. primary reference electrode
B. secondary reference electrode
C. metal - sparingly soluble salt electrode
D. metal - metal ion electrode

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1 Answers

Correct Answer - A
Standard hydrogen electrode (SHE) is primary reference electrode, SHE is represented by `Pt_((s))|H_(2) (g)|H^(+)` (aq), is assigned a zero potential at all temperature corresponding to reaction
`H^(+) (aq) + e^(-) to (1)/(2) H_(2) (g)`

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