Notices
Results 1 to 6 of 6

Thread: Electrolysis of saltwater.

  1. #1 Electrolysis of saltwater. 
    Forum Freshman
    Join Date
    Feb 2009
    Posts
    25
    All right, so i need some NaClO3, I figure that an electrolysis of some supersaturated salt water will yeild this result

    NaCl + 3/2 O2 + 6 e- > NaClO3 right?

    i figure that as long as i dont use copper electrodes i should be fine.
    I got a bunch of graphite rods and set it up and atm white solids are forming in the solution.

    thats the NaClO3 right? if I boil off / let the water evaporate im going to have NaClO3 and likely a bunch of salt.

    am i correct?


    Reply With Quote  
     

  2.  
     

  3. #2 chlorate 
    Forum Ph.D.
    Join Date
    Jan 2009
    Posts
    951
    formula is
    NaCl + 3H2O----> NaClO3+ 3H2

    yes the white stuff is the chlorate, don't boil just filter the solds to avoid a mix of salt and chlorate


    Reply With Quote  
     

  4. #3  
    Forum Professor
    Join Date
    May 2005
    Posts
    1,893
    I could be wrong, but based on the various redox potentials I believe you get chlorine gas and sodium hydroxide. I suspect that the white stuff is NaOH.
    Reply With Quote  
     

  5. #4 synthesis of sodium chlorate 
    Forum Ph.D.
    Join Date
    Jan 2009
    Posts
    951
    Industrially, sodium chlorate is synthesised from the electrolysis of hot sodium chloride solution in a mixed electrode tank:

    NaCl + 3H2O → NaClO3 + 3H2
    It can also be synthesised by passing chlorine gas to a hot sodium hydroxide solution. It is then purified by crystallization.

    Inorganic synthesis.
    Reply With Quote  
     

  6. #5  
    Forum Professor
    Join Date
    May 2005
    Posts
    1,893
    That's interesting, because Cl2 gas and NaOH are also produced industrially by electrolysis of a sodium chloride solution. I guess what products you get depends on the conditions.
    Reply With Quote  
     

  7. #6  
    Forum Freshman
    Join Date
    Feb 2009
    Posts
    25
    k, sorry, i forgot about this.

    If I keep my solution at a warm temperature while doing this and then filter the resulting substances i should get NaClO3?

    and If im wrong i get a bunch of lye (AKA drain cleaner). which means i should just dump it down my drains to clean 'em XD

    I will have to see (unless anyone else has done this)
    Reply With Quote  
     

Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •