108. What do you understand by standard potential of a half-cell? How is the electrode potential of a half-cell determined?

Standard half-cell potential E° : If the ionic species have concentration of mol dm^–3and pressure of the gaseous species is 1 atm (101.325 KPa), than half-cell potential is called as standard half-cell potential. The temperature being 298 K.
Absolute value of half-cell potential cannot be determined experimentally. However, its value relative to reference electrode can be determined.
Reference electrode 11 given half-cell. E°_cell can be measured experimentally using a potentiometer.

Knowing the standard reduction potential of the reference electrode E°_half-cell can be found out.