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Practical Organic Chemistry - Confirm positive test

  • Thread starter AGNuke
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  • #1
AGNuke
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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?
 
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Answers and Replies

  • #2
20
0
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?

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?
Yes slight effervesence should occur because the hydroxyl proton is slightly acidic

thanks
 
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  • #3
AGNuke
Gold Member
455
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Thanks for the help.

Question Resolved! :smile:
 

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