Which is most easily reduced?

Which is most easily reduced?

Use the reduction potential chart: nonmetals are at the top and are most easily reduced. Metals are at the bottom and are most easily oxidized. Lithium is at the bottom of the chart—it’s the most easily oxidized of all. So the order, from most easily oxidized to least easily oxidized, is Au, Fe, Cu, Ca, Li.

Which element has highest negative reduction potential?

So zinc is a reducing electrode. It works as anode (negative) in electrochemical cell. Explanation: Element (Li) having bottom-most position has lowest reduction potential hence it is the strongest reducing agent.

Which element has the highest oxidation potential?

Sodium

What is the relationship between the standard EMF of the cell and the equilibrium constant of the cell reaction at 298 K?

Standard emf of a cell is the difference in the standard reduction potentials of cathode and anode when no current flows through the cell. For the relationship between standard emf (E∘cell) are equilibrium constant(Kc), consult Section 9.11.

What is the relation between the equilibrium constant and standard EMF?

What is the relationship between E and the equilibrium constant K?

Spontaneous redox reactions have a negative ΔG and therefore a positive Ecell. Because the equilibrium constant K is related to ΔG, E°cell and K are also related. Large equilibrium constants correspond to large positive values of E°.

What is the relation between standard Gibbs free energy and standard emf of the cell?

Gibbs free energy and emf of the cell While the concentration of all considerable reacting species is same, E(cell) = Eo(cell) (i.e. standard cell potential and emf of a cell are equal). The Gibbs energy of a reaction is known to be an Extensive Thermodynamic Property which indicates that its value depends on n.

What is the relation between EMF and free energy?

Note: Remember EMF is an intensive property and Gibbs free energy is an extensive property. The decrease in Gibbs free energy is the NEGATIVE product of the amount of charge (nF) and EMF of the cell.

How EMF and free energy are related?

The maximum amount of work obtainable from the cell is the product of charge flowing per mole and maximum potential difference, E, through which the charge is transferred. Thus, the electrical energy supplied by the cell is (nFE) equal to the free energy decrease (- DG) of the cell reaction occurring in the cell.