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Sodium hydride from sodium and hydrochloric acid

  1. Jan 25, 2015 #1
    i know that sodium react with hydrochloric acid to form sodium chloride and(according to what i readed) free hydrogen. but i also readed in wikipedia that sodium hydride is made by the direct reaction of liquid sodium with hydrogen. so sodium hydride can be formed in good proportion by passing hydrochloride gas into liquid sodium?, and what about hydrochloride salts? sodium can also react with the hydrochloride to form sodium hydride and sodium chloride?.

    and another question, dose sodium hydride is pyrophoric? dose sodium hydride can be extracted from that reaction without inert atmosphere?
     
  2. jcsd
  3. Jan 25, 2015 #2

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  4. Jan 26, 2015 #3
    so it reacts with both HCl gas and salts?. and what about the reaction itself? it will produce enough heat to burn the sodium hydride? i readed in wiki that this substance is extremely flammable.
     
  5. Jan 26, 2015 #4

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    Only if the free energy of formation of NaCl is greater than that of the chloride salt being reacted.
    Which reaction? The NaH formation?
    If you're forming NaH, the reaction forming it will not "burn" it. If you do this in the presence of oxygen, all you form is Na2O and water.
     
  6. Jan 26, 2015 #5
    i meant to the hydrochloride salt, does sodium metal can react with some hydrochloride salts to form NaH?. if so it can work with the presence of oxygen?
     
  7. Jan 26, 2015 #6

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    "Hydrochloride salt" is an archaic (outdated, obsolete, useless, meaningless) term for describing chloride salts formed with organic bases, usually containing nitrogen, but there are others.
    No.
     
  8. Jan 26, 2015 #7
    so basicaly in the presence of oxygen sodium metal will react with this kind of salt(just called "chloride"?) to form sodium chloride and sodium oxide and water(sodium hydroxide at the end right?) and without oxygen it will form sodium chloride and sodium hydride?.
     
  9. Jan 26, 2015 #8

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    Yes, so long as there is an excess of sodium metal beyond what's consumed forming the chloride.
     
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