Question

what is she means...............

Answer 1

she means standard hydrogen electrode..............

Answer 2

SHE :- SHE is short form of " STANDARD HYDROGEN ELECTRODE " .

A hydrogen electrode in which the pressure of H2 gas is maintained at 1 ATM and concentration of Hydrogen cations ( H+) in the solution is 1M , is called " Standard hydrogen electrode " .

★ The emf ( electromotive force ) for SHE is taken as 0.00V at all temperatures .