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    Can someone explain how ethylbenzene has 3 hydrogen environments? I thought it was 5 but apparently it's 3 and I don't get why?
    Please save me I hate this
    Thanks


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    Benzene H's count as though they are all of the same type, so count as one environment, even though they are different.
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    (Original post by Pigster)
    Benzene H's count as though they are all of the same type, so count as one environment, even though they are different.
    Oh really thank you! Is this true whatever the benzene is attached to?


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    At A-level, it will be.
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    (Original post by Pigster)
    Benzene H's count as though they are all of the same type, so count as one environment, even though they are different.
    Really? Since when was that the A-Level curriculum?
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    (Original post by Infraspecies)
    Really? Since when was that the A-Level curriculum?
    What do you mean?


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    (Original post by anoymous1111)
    What do you mean?


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    Don't worry, I'm expressing outrage at how the A-levels seem to have changed over the years. Either than, or different exam boards. It's irrelevant, so don't stress it twinkleshine.
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    I know OCR A best, using Jun 2014 F324 Q4 as an example, there is a set of peaks around shift = 7, which looks like a quartet with integration stated as 4.

    The OCR A states: "Candidates will be expected to identify aromatic protons from chemical shift values but will not be expected to analyse their splitting patterns."

    So, candidates would be expected to get the type of environment from the shift value, the number of H from the integration and IGNORE the splitting pattern.

    Jun 2015 F324 is a better example of how OCR expect you to interpret benzene Hs.
 
 
 
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