Electrolysis of Brine

  • #1
DeathKnight
73
0
Electrolysis of Brine....

Why does castner-kellner cell produces Na. I was always told that Na formed too stable an ion to be reduced when it is in aqueous solution even when the solution is concentrated. I myself have carried out this experiment by elecrolysing concentrated aq. Sodium Chloride(Brine) by using a 12V car battery. I could not see any Na formed. If it had formed, I know that it would have reacted with water but if that's the case why couldn't I notice the reaction since Na reacts violently with water?
Thanks on advance for any help...
 
Last edited:

Answers and Replies

  • #2
Borek
Mentor
29,137
3,765
Not sodium is formed, but sodium amalgam, which reacts with water to produce sodium hydroxide. In amalgam sodium is dissolved in mercury so it is not in a direct contact with water.
 

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