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    pop000's Avatar
    pop000 Posts: 352, Reputation: 6
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    #1

    Apr 18, 2011, 02:54 AM
    Dipole and Resonance
    I got 2 questions that says:


    1)i need to draw another 2 Resonance structure to the molecule in the red frame.
    In the blue frame you can see my tried and I am not sure if is correct.

    2) I need to decide if this molecule ( I speak about the molecule in the red frame)has a Dipole, so I mark in blue arrow the Electronegativity where is will be more strong,but is hard to decide if it have a Dipole.

    So I need help here.
    Thanks.
    DrBob1's Avatar
    DrBob1 Posts: 425, Reputation: 86
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    #2

    Apr 18, 2011, 05:40 AM
    The two structures that you have drawn are indeed the two resonance structures for asprin.
    There is polarity in the carboxylate groups (-COOR and -COOH) but the molecule will be only slightly polar. That's why is is poorly soluble in water.
    Do you need a total of FOUR resonance structures? You can draw charged structures with the C=O groups but I wouldn't consider them true resonance structures.
    pop000's Avatar
    pop000 Posts: 352, Reputation: 6
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    #3

    Apr 18, 2011, 06:08 AM
    Comment on DrBob1's post
    I need to draw only 2 resonance structures 1 I showed you and other I will do.
    About the has a Dipole you says that there is a polarity so I believe there is a Dipole ?
    Thanks for answer.
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