When an electrochemical cell reaches equilibrium, what is the measured cell potential?
- busterwasmycatLv 75 months ago
it should be 0. there is no preferential transfer of energy in either way, the back and forth processes are in balance, equal in magnitude. no net change is possible without changing conditions.
- lenpol7Lv 75 months ago
Depends on the chemicals of the cell.
The Standard (Hydrogen) Cell is by definition 0V.
The cell operates at 1tm pressure. 1M solution at 25 degrees C .
- pisgahchemistLv 75 months ago
Zero ........A voltaic cell at equilibrium has run down and no longer produces a potential difference .... "The battery is dead."
Gibbs free energy
ΔG° = -nFE°
At equilibrium ΔG° is zero, therefore E° must be zero.
- USAFisnumber1Lv 75 months ago
Zero......equilibrium means equal. Not negative, not positive.