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       #Post#: 973--------------------------------------------------
       Reagent question
   DIR By: Chris
       Date: October 24, 2012, 10:23 am
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       Apart from AgNO3/HNO3, and Pb(NO3)2 which other reagents can be
       used to test for chloride ion?
       #Post#: 977--------------------------------------------------
       Re: Reagent question
   DIR By: Shiva
       Date: October 24, 2012, 12:53 pm
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       You can confirm almost any anions straightaway by adding
       Concentrated sulfuric acid as it is strong enough to displace
       most of the acids from their salts. For more, please visit my
       blog. You can find virtually any salts in just 5 steps. I had
       written mainly for school and college practicals.
  HTML http://mypassionforinorganicchemistry.blogspot.in/
       Hope this is helpful for you.
       Thank you,
       Shiva
       #Post#: 983--------------------------------------------------
       Re: Reagent question
   DIR By: Michel
       Date: October 25, 2012, 9:31 am
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       If my interpretations are correct,
  HTML http://www.chemplanet.org/laboratory-chemistry/h(sub)2(sub)o(sub)(sub)-reduction-of-copper-carbonate/
       could also be a way to detect Cl-
       Unfortunately I have no references :(
       #Post#: 992--------------------------------------------------
       Re: Reagent question
   DIR By: Shiva
       Date: October 27, 2012, 4:44 am
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       Absolutely Michel. This is a good example of reducing property
       (unusual) of Hydrogen peroxide.  This reaction is a ditto of how
       sulfur dioxide reduces cupric to cuprous ion when it passes
       through cupric salt solution containing chloride ion. But, the
       question is how it will respond to insoluble chlorides such as
       Lead chloride, Silver chloride etc .... But, I've used Magnesium
       chloride in place of Sodium chloride and it works:-)  Although,
       it is not as effective as sulfur dioxide reduction, it works
       reasonably well. So, it can be a good way to detect the chloride
       ion. Also, what I like about hydrogen peroxide is, it does not
       produce any additional compound at the end. Did you add Sodium
       hydroxide to the white precipitate? It should turn yellow on
       adding Sodium hydroxide due to the formation of cuprous oxide
       and it will turn red on heating.
       Shiva
       #Post#: 994--------------------------------------------------
       Re: Reagent question
   DIR By: Michel
       Date: October 27, 2012, 5:55 am
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       Yes, indeed I added NaOH to the mix in a separate experiment,
       and I observed the yellow precipitate formed, I wrote something
       about it here
  HTML http://www.chemplanet.org/online-resource-materials/t77/
       CuCl is hydrolysed in alkaline solutions, also interestingly
       H2O2 also precipitates Cu2O from ammoniacal complexes of Cu2+
  HTML http://www.chemplanet.org/electrochemistry/interesting-reaction-between-h2o2-copper-complexes/
       #Post#: 997--------------------------------------------------
       Re: Reagent question
   DIR By: Shiva
       Date: October 27, 2012, 7:21 am
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       woot! Great! Do you have any insoluble chloride to test it?
       Unfortunately, I do not have any to test it :(
       #Post#: 1002--------------------------------------------------
       Re: Reagent question
   DIR By: Michel
       Date: October 27, 2012, 8:35 am
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       --- Quote from: Shiva link ---
       >
       > woot! Great! Do you have any insoluble chloride to test it?
       Unfortunately, I do not have any to test it :(
       >
       --- End Quote ---
       well, I believe I had some PbCl2 then, but now I do not have any
       insoluble Chlorides.  To test for AgCl, one could make a
       tetraammine Ag ion, releasing the Cl- then confirm the presence
       of Cl- but it's easy to admit the method is lame :D
       #Post#: 1003--------------------------------------------------
       Re: Reagent question
   DIR By: Shiva
       Date: October 27, 2012, 10:02 am
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       haha, Silver chemistry is too expensive.
       #Post#: 1078--------------------------------------------------
       Re: Reagent question
   DIR By: Michel
       Date: November 9, 2012, 10:46 am
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       --- Quote from: Shiva link ---
       >
       >
       >
       >
  HTML http://mypassionforinorganicchemistry.blogspot.in/
       >
       >
       --- End Quote ---
       can I add your blog to our featured links?
       #Post#: 1084--------------------------------------------------
       Re: Reagent question
   DIR By: Shiva
       Date: November 9, 2012, 12:47 pm
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       Sure :-)
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