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IR Spectrum question

  1. Jan 5, 2012 #1
    1. The problem statement, all variables and given/known data

    I have attached the question and necessary infromation


    2. Relevant equations



    3. The attempt at a solution
    so here's what I would say

    "Unlikely as the peaks in the IR spec are very similar, no additional peaks have shown"

    BUT THE MARK SCHEME SAYS

    Vanillin IS likely to have formed;
    as the IR spectrum shows absorption for C=O;
    at about 1740-1720;
    this is ABSENT IN THE IR SPEC of 2-methoxyphenol


    BUT IT CLEARLY IS NOT, the PEAK IS CLEARLY THERE IN BOTH SPECTRA
    What are they talking about???
     

    Attached Files:

  2. jcsd
  3. Jan 19, 2017 #2

    TeethWhitener

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    Science Advisor
    Gold Member

    C=O peaks are very strong, and the difference between the spectra is that the peak at 1740 is much stronger in the product spectrum than in the reagent spectrum.
     
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