Question

What is SHE? Explain its construction and application.

Answer 1

SHE (standard hydrogen electrode)

$2H^{+}+2e^{-}\to H_2\left(g\right)$ occur at platinum

electrode (or innert electrode)

$E_{cell}=0$$at({25}^{0}c$, $1M\left[H^{+}\right]$,$P_{H_2}$$=1atm)$

$\to$ Used as reference electrode.