Standard Electrode Potential

[705984992]

How does manipulating the temperature, concentration, or pressure for gases affect the standard electrode potential of a cell?

[205538966]

Changes in temperature, pressure or concentration will effectively change the position of the redox equilibrium and hence the electrode potential of the half-cell. If the position of equilibrium is shifted in favour of the forwards reaction (the reduction), the electrode potential becomes more positive.

[mehaksk]

The standard electrode potential (E∘) of a cell is a constant that does not change with temperature, concentration, or pressure. However, the actual electrode potential (E) under non-standard conditions can be affected by changes in these parameters through the reaction quotient (Q) in the Nernst equation.

Changing pressure for gases changes their concentration, affecting Q and thus E.
Varying temperature impacts E directly as it appears in the Nernst equation.
Altering the concentration of reactants or products changes Q, influencing E.

[Pranaya Vijay 1E]

Changing the temperature can affect the cell's potential depending on how it affects the K value. It will change how spontaneous the reaction is, thus making the cell potential more negative or positive.

[Pranaya Vijay 1E]

Changing the temperature can affect the cell's potential depending on how it affects the K value. It will change how spontaneous the reaction is, thus making the cell potential more negative or positive.