What is the relation between Gibbs free energy of cell and electrode potential?
In a galvanic cell, the Gibbs free energy is related to the potential by: ΔG°cell = −nFE°cell. If E°cell > 0, then the process is spontaneous (galvanic cell). If E°cell < 0, then the process is nonspontaneous (electrolytic cell).
What is the change in free energy for electrolytic cell?
Gibbs free energy is a measure of spontaneity in a reaction. In a galvanic cell that is spontaneous, Gibbs free energy decreases as the cell moves towards a more stable equilibrium. In an electrolytic cell, energy is added to the reaction (like charging a battery.)
What is the relation between cell potential and equilibrium constant?
The Relationship between Cell Potential & the Equilibrium Constant. Thus E°cell is directly proportional to the logarithm of the equilibrium constant. This means that large equilibrium constants correspond to large positive values of E°cell and vice versa.
What is the value of the equilibrium constant for the cell reaction?
The equilibrium constant of the cell’s redox reaction is 3.16 x 10282.
What happens when diffusion reaches equilibrium?
When a molecule is diffusing, the molecule moves and when it reaches equilibrium, it means that the movement of the molecule from the higher concentration region to lower concentration stops but the molecules are always in a random movement about their fixed position.
What is diffusion give an example?
Diffusion, process resulting from random motion of molecules by which there is a net flow of matter from a region of high concentration to a region of low concentration. A familiar example is the perfume of a flower that quickly permeates the still air of a room.
How does diffusion work in a cell?
In facilitated diffusion, molecules diffuse across the plasma membrane with assistance from membrane proteins, such as channels and carriers. A concentration gradient exists for these molecules, so they have the potential to diffuse into (or out of) the cell by moving down it.