Question

What is the effect of change in temperature on the electrode potential of a given half cell?

Answer 1

The electrode potential of a half-cell is influenced by temperature because it affects the kinetics and equilibrium of the redox reaction. According to the Nernst equation, temperature appears in the formula and influences the movement of ions and electrons.

If temperature increases:

1. The electrode potential may increase or decrease, depending on whether the redox reaction is exothermic or endothermic.
2. It generally causes a shift in equilibrium, affecting the magnitude of the electrode potential.