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Topic: really shory question please,, :)  (Read 4275 times)

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trishhead

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really shory question please,, :)
« on: February 20, 2006, 05:58:56 AM »
thanks for answering my last question,,,
i just have one small last one, i am doing the chemisrty of NACL and KNO2 and all i am missing are uses for these compounds in the lab, i have uses in industry but not in the lab,
thanks!    :1eye:
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Offline Albert

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Re:really shory question please,, :)
« Reply #1 on: February 20, 2006, 06:29:25 AM »
Solid and pure NaCl is a common primary standard for standardizing AgNO3 solutions. However, this is only one of its many uses.

NO2- is a weak oxidizing agent. I came across this reaction, but, to be honest, I've no idea about its application:

2 NO2- + 4 H30+ + 3 I-  ->  2 NO + 6 H2O +  I3-
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Offline AWK

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Re:really shory question please,, :)
« Reply #2 on: February 20, 2006, 08:18:21 AM »
This reaction produces pure iodine in the lab
2NO2(-) + 4H30(+) +  2I(-)  ->  2NO(g) + 6H2O +  I2(s)

NaCl can be used for obtaining HCl
NaCl + H2SO4 = NaHSO4 + HCl(g) (RT)
NaCl + NaHSO4 = Na2SO4 + HCl9g) (when warming)

or chlorine with H2SO4 and KMnO4, or K2Cr2O7, or MnO2, or Pb3O4
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