Prediction of products of electrolysis

The products of electrolysis of aqueous salt solution can be predicted. Ikut je step kat atas ni, insyaAllah, anda akan dapat jawapannya. 

Ex: 2.0 mol dm-3 sodium chloride is electrolysed using carbon electrodes. Predict the ions will be discharged at anode and cathode respectively.

Solution: 

1. List down all the ions present in the solution.

Cations: Na^{+ ,} H⁺   

Anions : OH- , CL-

2.3. Inert electrodes but concentrated solution is used. Thus the factor cocentration is concerned.

4. Cathode :  H+ ions are selectively discharged due to lower position in ES. (What is ES?)

    Anode   : Cl- ions are selectively discharged because its concentration is higher than OH- ions. 

*Kalau tak faham tanya okay :)