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

    Jan 12, 2011, 01:49 AM
    Structural isomers
    Tell me if I correct, I need to mark all the couple Structural isomers in the list(you can see in the picture)so I mark in blue all what I think is an Structural isomers.

    About B I am not sure.

    Thanks.
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    DrBob1's Avatar
    DrBob1 Posts: 425, Reputation: 86
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    #2

    Jan 12, 2011, 11:03 AM
    I think I can read your structures well enough to say that A, C & D ARE structural isomers.
    The A's are both C5H10O2: Ethyl propanoate and Pentanoic acid.
    The C's are both C5H10: 2-methyl-2-butene and 2-pentene.
    The D's are both C6H12: 3-hexene and cyclohexane.
    The B's are both the same compound: bromoethane.
    pop000's Avatar
    pop000 Posts: 352, Reputation: 6
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    #3

    Jan 12, 2011, 11:19 AM
    Comment on DrBob1's post
    Well if you says "The B's are both the same compound: bromoethane" so is not also a couple Structural isomers?
    Thank you.
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #4

    Jan 12, 2011, 11:43 AM

    No, if you hold the first molecule in one hand and the other in another hand (the models of them, that is), you'll see that rotating one around will give you the same thing you have on the other hand.
    pop000's Avatar
    pop000 Posts: 352, Reputation: 6
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    #5

    Jan 12, 2011, 12:00 PM
    Comment on Unknown008's post
    Again you gave an great answer. REALLY thanks to both of you Unknown008 and DrBob1. I really appreciate all of your help.
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