Romix Posted September 8, 2014 Share Posted September 8, 2014 (edited) Can solution of NaOH dissolve isolation rubber around copper wire? Would heated alloy of lead and tin react with Cl2(g)? If they do react, anhydrous PbCl2 and anhydrous SnCl4 will form. Dissolve them in still H2O, SnCl4 soluble and PbCl2 not. Filter of insoluble Lead(II) Chloride and wash it. After pure tin crystals can be recovered by electrolyzing solution what's left. Edited September 8, 2014 by Romix Link to comment Share on other sites More sharing options...
Enthalpy Posted September 8, 2014 Share Posted September 8, 2014 The insulation of electric wire is usually PVC, which an alkali would not deteriorate quickly. Though, I'd prefer ETFE or PVDF insulation, which exist, among others for satellites. I'd worry more about the electrodes than the insulator. Is your goal to separate Sn from Pb in an alloy? Electricity is expensive, electrolysis is slow. Did you consider distillation instead? Pb boils at 1649°C (1atm) Sn boils at 2602°C (1atm) http://www.webelements.com/tin/index.html that makes an efficient spread, easy to use (reduce the pressure), faster and costing far less than the electrolysis, avoiding chlorine. Link to comment Share on other sites More sharing options...
Romix Posted September 8, 2014 Author Share Posted September 8, 2014 (edited) I need NaOH for one experiment, by doing this I kill two rabbits in one shot. Edited September 8, 2014 by Romix Link to comment Share on other sites More sharing options...
Sensei Posted September 8, 2014 Share Posted September 8, 2014 If you don't want insulation to dissolve, and contaminate solution, do the same as in Hofmann's voltameter http://en.wikipedia.org/wiki/Hofmann_voltameter Place electrodes up-side-down in bottom of container. You can buy ready device for 50 ukp, see f.e. http://www.sci-mart.com/Chemistry/Stands/hoffman-voltmeter Link to comment Share on other sites More sharing options...
Romix Posted October 6, 2014 Author Share Posted October 6, 2014 If you don't want insulation to dissolve, and contaminate solution, do the same as in Hofmann's voltameter http://en.wikipedia.org/wiki/Hofmann_voltameter Place electrodes up-side-down in bottom of container. You can buy ready device for 50 ukp, see f.e. http://www.sci-mart.com/Chemistry/Stands/hoffman-voltmeter Thanks for link, ordered graphite rods there. Link to comment Share on other sites More sharing options...
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