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Several Questions from the 2012 GCE AL Sri Lanka

  1. Aug 15, 2012 #1
    1. The problem statement, all variables and given/known data
    1. Name the Organic compound (Picture 1)
    2. In the compound NSF what is the oxidation value of Sulfur?
    3. What happens when HC[itex]\equiv[/itex]C-CH2CH2CH2NH2 + NaHCO3?
    4. What are the compounds that will form by reacting the compound shown in the picture 2 with LiAlH4?
    5. What is the ascending order of these acids.
    Benzoic acid, m-nitro Benzoic acid, p-nitro Benzoic acid

    2. The attempt at a solution
    1. 1-hydroxy-2-methylpent-4-yn-3-one
    2. +4
    3. Releases CO2
    4. Methanol + CH2NH2-(Phenol) * (OH- at the meta place relative to the methyl amine.
    5 . Benzoic acid, p-nitro Benzoic acid, m-nitro Benzoic acid
     

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    Last edited: Aug 15, 2012
  2. jcsd
  3. Aug 15, 2012 #2

    AGNuke

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    Gold Member

    1. Correct
    2. Correct
    3. I don't think so. Alkynes are not that of strong acids to release CO2 from NaHCO3
    4. Correct
    5. Benzoic Acid, m-nitro Benzoic Acid, p-nitro Benzoic Acid.
     
  4. Aug 15, 2012 #3
    WOO!!! Thanks bud. So I got all the 1,2,3,4 correct but 5th one wrong :( Anyway that's great!!! Thanks again!!!
     
  5. Aug 16, 2012 #4

    AGNuke

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    Gold Member

    You mentioned 3rd one incorrect. Did you corrected yourself afterwards?
     
  6. Aug 16, 2012 #5
    Yeah. I was wondering if it releases CO2 then I thought it won't!!! 1 point for me!!!
     
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