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    (Original post by ranz)
    giys i know this has been asked before but is the carbon in the aldehyde can it produce splittings?


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    Carbons don't split at all
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    (Original post by Chem1stry101)
    Carbons don't split at all
    i mean hydrogen


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    Predictions from @ChemistryALevel
    TLC/gas chromatography with nature of solubility is due.
    Nucleophilic addition
    C13 NMR
    benzene ring structure
    D2O
    Triglycerides
    Acid anhydrides
    Synthesis always
    Chiral C mirror images drawing in 3D
    Phenol
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    Benzene ring structure, what does that mean :/
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    i think like c-c bonds same length, enthalpy of hyd lss exothrmic than expected, lower electron density and more stable so wont polarise br2 unless in presence of halogen carrier, pi electrons delocalised
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    (Original post by RayMasterio)
    Benzene ring structure, what does that mean :/
    Describe it ie how the pi bonds form, bond angle etc

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    In the 2015 nmr at 7.1 ppm, where's the 7 protons?

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    (Original post by Hunnybeebee)
    In the 2015 nmr at 7.1 ppm, where's the 7 protons?

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    bits on the 2 benzene rings that arent bonded to anything so 3+4
    hey i remember u, good luck!
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    Anyone know the conditions for coupling (like Phenol + diazonium)? It doesn't say in the book for some reason.
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    (Original post by Hunnybeebee)
    In the 2015 nmr at 7.1 ppm, where's the 7 protons?

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    You might want to watch this. There are two benzene rings in the structure.
    https://www.youtube.com/watch?v=UuEfvamQrP4
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    How do you calculate the mr of compound G (q4 ii) JUNE 2013??
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    (Original post by yoda123)
    bits on the 2 benzene rings that arent bonded to anything so 3+4
    hey i remember u, good luck!
    I figured it out soon after posting :P thank you! Looll how n where? Hope it's a good thing and you too!

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    guys you know when u draw the 3d structure does it matter where u put each group like the positions
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    (Original post by Hunnybeebee)
    I figured it out soon after posting :P thank you! Looll how n where? Hope it's a good thing and you too!

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    hi u know when u draw the 3d structure does it matter where u draw the 4 diffrernt chains
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    (Original post by blessed107)
    guys you know when u draw the 3d structure does it matter where u put each group like the positions
    you can put them anywhere, as long as each group is on the exact same position on each isomer
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    (Original post by tomlam)
    Anyone know the conditions for coupling (like Phenol + diazonium)? It doesn't say in the book for some reason.
    alkaline conditions/ NaOH
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    Why can Na2Co3 react with COOH but not phenol

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    (Original post by Hunnybeebee)
    Why can Na2Co3 react with COOH but not phenol

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    COOH is an acid which can behave like a normal acid with a carbonate ie Na2CO3 +
    HCl => NaCl + Co2 + H2O
    (Not balanced btw)
    Whereas phenol is a weak acid so it can't react if that makes sense
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    Do we need to know that NaBH4 is in aqueous ethanol?
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    (Original post by Hunnybeebee)
    In the 2015 nmr at 7.1 ppm, where's the 7 protons?

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    You know it's taking about 2 benzene rings for a start becase there can't be more than 6 in a benzene ring!

    You've got 3 protons in the benzene ring in the bit it gives you, so 4 in the R2 group meaning it's double substituted.
 
 
 
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