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Practical Organic Chemistry - Confirm positive test

  1. Nov 21, 2011 #1

    AGNuke

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    Gold Member

    I don't know where to ask this question, but anyways, since it was asked in an exam, so finding out the correct answer afterwards is a moral responsibility as a homework. So here I am.

    My question is whether the compound 2-Hydroxy-5-nitrobenzaldehyde (Did I named correctly?) gives positive test with NaHCO3? I mean, will it give effervescence of CO2?

    [PLAIN]http://www.sigmaaldrich.com/medium/structureimages/37/mfcd00007337.png [Broken]

    All I know is 2,4-Dinitrophenol will give effervescence with NaHCO3 as H in OH becomes acidic. So the same phenomena will happen here on OH's H because of Nitro and aldehyde group?
     
    Last edited by a moderator: May 5, 2017
  2. jcsd
  3. Nov 23, 2011 #2
    Yes slight effervesence should occur because the hydroxyl proton is slightly acidic

    thanks
     
    Last edited by a moderator: May 5, 2017
  4. Nov 23, 2011 #3

    AGNuke

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    Thanks for the help.

    Question Resolved! :smile:
     
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