Electrochem

Question 1

Define electrode potential

Answer 1

The electrode potential of an element is the potential difference between an aqueous solution of its ions and the element when it is in equilibrium with that solution.

Question 2

What does the electrode potential of the metal depends on?

Answer 2

It depends on the nature of the metal, concentration of the ions, temperature and pressure.

Question 3

What is the function it the salt bridge?

Answer 3

• It is to allow the flow of charged ions to maintain electrical neutrality.
• prevent mixing of the different solutions by diffusion.

Question 4

Define the standard electrode (Redox) potential.

Answer 4

The standard electrode potential of a half cell is the potential difference between the electrode half cell and the standard hydrogen electrode (taken as 0.00V) measured under standard conditions.

Question 5

Define standard cell potential.

Answer 5

The standard cell potential is the maximum potential difference between 2 electrodes of an electrochemical cell measured under standard conditions.