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I am conducting a thought experiment in which 40 million tons of hydrogen are supplied through saltwater electrolysis each year, creating 700 million tons of chlorine gas (Cl2) and 800 million tons of sodium hydroxide. (Lye)

I think I can get rid of a good chunk of the sodium hydroxide by mixing it with nitric acid and creating sodium nitrate for use as substitute for ammonium nitrate fertilizer, but I am not sure on how to get rid of the chlorine gas.

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    $\begingroup$ Well, if you're allowed to use anything you like, just react it with sodium metal and enjoy a lifetime's supply of table salt... $\endgroup$ – orthocresol Apr 13 '16 at 2:19
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    $\begingroup$ Just sell it. It is used in industry. $\endgroup$ – CoffeeIsLife Apr 13 '16 at 2:49
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    $\begingroup$ This is a follow-on to a previous question chemistry.stackexchange.com/questions/49346/… $\endgroup$ – MaxW Apr 13 '16 at 2:50
  • $\begingroup$ Simply, sell it (Javel water!) $\endgroup$ – Yomen Atassi Apr 13 '16 at 6:36
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    $\begingroup$ Current world production of chorine is about 100m tonnes per year. You would seem to be creating a gross surplus. Perhaps giving everyone in the world clean water and lots of sodium hypochlorite would be a start. Or you could make a lot of PVC and distribute it free. $\endgroup$ – matt_black Apr 13 '16 at 10:14

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