Sciencemadness Discussion Board

Products of electrolysis of brine

cnidocyte - 8-7-2010 at 10:01

Would I be right in assuming that after the chlorine ions are converted to Cl2 gas that the Na+ ions are reduced by the electrical current producing Na which then reacts with the water to form NaOH?

condennnsa - 8-7-2010 at 10:24

no , you only get NaOH in a membrane cell, if the cell is simple you get a solution of sodium hypochlorite (if the temperature is low). at temperatures above 40 C hypochlorite disproportionates to chlorate and chloride.

I have made lots of chlorate electrolytically, and for me graphite anodes has worked really well .

cnidocyte - 8-7-2010 at 10:54

Intersting stuff, thanks for informing me about that. I took a glance at the wiki page on NaClO and spotted this
Quote:
Near the end of the nineteenth century, E. S. Smith patented a method of hypochlorite production involving hydrolysis of brine to produce caustic soda and chlorine gas which then mix to form hypochlorite.

now I get it.