2nd Posted January 6, 2008 Share Posted January 6, 2008 Is it possible to pass a chlorine gas (NOT LIQUID) on NaOH to get NaOCL ? For example i have 500 G of NaOH and 300 CM3 of CL2 so if i mixed them i get NaOCL ? I really want to try this one Link to comment Share on other sites More sharing options...
thedarkshade Posted January 6, 2008 Share Posted January 6, 2008 Well at school we were had this equation: [ce]2NaOH + Cl2 -> NaCl + NaOCl + H2O[/ce] ... so I guess it works. And yup, the gas chlorine! Cheers, Shade Link to comment Share on other sites More sharing options...
Darkblade48 Posted January 7, 2008 Share Posted January 7, 2008 Yes, using chlorine gas, you can bubble it through a solution of NaOH to obtain sodium hypochlorite. The reaction should be carried out in the cold in order to prevent degradation of the hypochlorite. Link to comment Share on other sites More sharing options...
2nd Posted January 7, 2008 Author Share Posted January 7, 2008 Yes, using chlorine gas, you can bubble it through a solution of NaOH to obtain sodium hypochlorite. The reaction should be carried out in the cold in order to prevent degradation of the hypochlorite. NaOH Soultion! it's a powder that i have should i dissolve it with water to get NaOH solution 2NaOH + Cl2 -> NaCl + NaOCl + H2O ... so I guess it works. Is there any way to separate it from NaCL? Link to comment Share on other sites More sharing options...
thedarkshade Posted January 7, 2008 Share Posted January 7, 2008 Is there any way to separate it from NaCL? I was thinking of heating the solution, because NaCl dissolves weakly in hot, so it would remain as a precipitate! Link to comment Share on other sites More sharing options...
YT2095 Posted January 7, 2008 Share Posted January 7, 2008 don`t heat it! (either of them for that matter). NaOH(s) will heat anyway upon hydration, and heating NaOCl will result in the breakdown of it to form NaClO3 and more NaCl. Link to comment Share on other sites More sharing options...
2nd Posted January 7, 2008 Author Share Posted January 7, 2008 don`t heat it! (either of them for that matter). NaOH(s) will heat anyway upon hydration, and heating NaOCl will result in the breakdown of it to form NaClO3 and more NaCl. That's happen to me last time when i heated the bleach (NaCLO + Water) i get NaCLO3 with mass of bubbles Link to comment Share on other sites More sharing options...
Darkblade48 Posted January 7, 2008 Share Posted January 7, 2008 I was thinking of heating the solution, because NaCl dissolves weakly in hot, so it would remain as a precipitate! Don't heat the solution, as mentioned, this will cause the decomposition of the hypochlorite. By cooling the solution, you will obtain a precipitate of NaCl, which can easily be filtered out, and you will be left with your hypochlorite solution. Link to comment Share on other sites More sharing options...
thedarkshade Posted January 7, 2008 Share Posted January 7, 2008 Ah, so it's cooling. kk Link to comment Share on other sites More sharing options...
BABA123 Posted August 4, 2008 Share Posted August 4, 2008 Does anybody have heat of formation data for NaOCl?? or heat of reaction for NaOCl preaparation reaction from Cl2 and NaOH?? Link to comment Share on other sites More sharing options...
frosch45 Posted August 4, 2008 Share Posted August 4, 2008 (edited) Its not that hard to get liquid chlorine.... Just use dry ice in some acetone in a large beaker and then have a test tube held by a clamp in that 'mixture'. Then have a tube feeding chlorine into the test tube and the chlorine will liquefy because its boiling point is -34.4 °C, and dry ice is colder than −78 °C. This way you don't need water in the equation. But it decomposes unless aqueous... so it wouldn't do much in this situation. It also decomposes a little over 100 °C IIRC... the hypochlorites just aren't very stable And I have looked all over the web for your heat of formation, but I can't seem to find it.... Edited August 4, 2008 by frosch45 Link to comment Share on other sites More sharing options...
YT2095 Posted August 5, 2008 Share Posted August 5, 2008 if you keep the pH High enough NaOCl is reasonably stable, even up to ~12%. so keep your NaOH in excess. Link to comment Share on other sites More sharing options...
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