The standard free energy change is always positive for a reaction in an electrolytic cell.
<h3>What are electrolytic cells?</h3>
An electrolytic cell is defined as a device that uses electrical energy to facilitate a non-spontaneous reaction.
The components of an electrolytic cell are
- Cathode - negatively charged for electrolytic cells
- Anode - positively charged for electrolytic cells
- Electrolyte - It provides the medium for the flow exchange of electrons between cathode and anode
The standard Gibbs free energy, is given by
= -nFE°
where, n = no of moles of electrons gained or lose
F = Faraday's constant
E° = standard potential of cell
For electrolytic cells, the reaction is non-spontaneous and energy is provided. Thus, E = -ve
∆Go = (-ve) (-ve) = +ve
Hence, the standard free energy change is positive for a reaction in the electrolytic cell always.
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