* Electrolysis of Water: When you electrolyze an aqueous solution, water molecules are also present. Water is more easily reduced than sodium ions (Na+). This means that at the cathode (negative electrode), where reduction occurs, hydrogen gas (H2) is produced instead of sodium metal.
* Formation of Chlorine Gas: At the anode (positive electrode), where oxidation occurs, chloride ions (Cl-) are oxidized to form chlorine gas (Cl2).
Summary of Reactions:
* Cathode (reduction): 2H2O(l) + 2e- → H2(g) + 2OH-(aq)
* Anode (oxidation): 2Cl-(aq) → Cl2(g) + 2e-
To extract sodium metal, you need to use a different method:
* Electrolysis of Molten Sodium Chloride: Sodium metal can be extracted by electrolyzing molten sodium chloride (NaCl). In this case, the absence of water means that sodium ions are the most easily reduced species at the cathode, allowing for the formation of sodium metal.
Let me know if you have any other questions!
