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ochem problems

Discussion in 'DAT Discussions' started by allstardentist, Jul 26, 2006.

  1. allstardentist

    allstardentist All-Star
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    Which of the following substituents has the greatest
    electron-withdrawing effect?
    A. Br
    B. Cl
    C. F
    D. CH3
    E. NH2

    Which of the following substituents has the greatest
    electron-withdrawing effect?
    A. Br
    B. Cl
    C. F
    D. CH3
    E. NH2

    anyone?
     
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  2. DMD to Be

    DMD to Be not luffin' this weather.
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    CH3 and NH2 are activators - meaning they push electrons into the ring. A, B, and C are the only deactivators. I'd probably say Bromine would have the greatest electron-withdrawing effect. Not totally sure about that though.
     
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  3. Immuno-guy

    Immuno-guy Member
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    Surely it is fluorine.

    NH3 and CH3 are electron donating; leaving only halogens. Of these, F is clearly the most electonegative and therefore withdrawing.

    Do we agree?
     
  4. aranjuez

    aranjuez Member
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    Immuno,

    Agreed.

    aranjuez
     
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  5. OP
    OP
    allstardentist

    allstardentist All-Star
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    oops, u guys are right. i was right too. i just looked at the wrong solution.
     
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  6. DMD to Be

    DMD to Be not luffin' this weather.
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    lol, guess i'll be moving my DAT test date back a few weeks... :laugh:
     
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  7. dental#1

    dental#1 Fla DDS
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    C is 200% correct! F- is much more electronegative therefore giving it the ability to withdraw e- more than the others!(Br an Cl)
    :thumbup:
     
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