Question

Define standard electrode potential.

Define standard half cell potential.

Answer 1

Standard electrode potential is the difference of electrical potential between a metal electrode and the solution around it at equilibrium when all the substances involved are in their standard states.

Answer 2

The potential of an electrode assembly is referred to as the standard electrode potential when the following conditions are satisfied.

1. The temperature of the electrode assembly is 298 K (25°C).
2. The ion solution used in the assembly is of concentration 1 mol L⁻¹.
3. The pressure of the gas, if used in the assembly, is 1 atm.