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Discussion in 'DAT Discussions' started by Kami, Mar 22, 2007.

  1. Kami

    Kami Member 10+ Year Member

    91
    0
    Aug 23, 2003
    Can anyone answer the following:

    Which of the following solvents would be soluble in water

    a) Carbon tetra chloride
    b) Diethyl ether
    c) chloroform
    d) propanol
    e) a & d
     
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  3. DDSDakoo

    DDSDakoo 7+ Year Member

    56
    0
    Feb 27, 2007
    Texas
    I'm pretty sure the answer is D (Propanol).

    REASONING:
    When I think of molecular water, 2 things come to mind> H-Bonding & Polarity

    Carbon tetrachloride is a tetrahydral Non-polar compound (since all the Cl's dipole moments cancel each other out and it does not exhibit H bonding)

    Diethyl ether is also non polar (and it does not exhibit hydrogen bonding)

    Chloroform is also non-polar since the two bonds that are across from each other cancel out (Also its an organic solvent which forms a diff. layer in h20)

    Propanol does have H bonding, and is polar.

    Remember: like dissolves like. :thumbup:
     
  4. BodybldgDoc

    BodybldgDoc Guest

    712
    0
    Jan 13, 2007
    In your closet
    D. Propanol has dipole moment and follows the rule "Like dissolves like"
     
  5. Kami

    Kami Member 10+ Year Member

    91
    0
    Aug 23, 2003
    Yes the answer is D and another explanation is that alcohols from carbon atoms 1 to 4 are soluble in water.
     
  6. sickeye29

    sickeye29 New Member 2+ Year Member

    30
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    Jul 20, 2006
    Los Angeles
    i agree the answer is D because it can hydrogen bond with water, but if there was a choice of "b and d" i would pick that to because short ethers can also form hydrogen bonds in water, but note, not as well as alcohols.
     
  7. snapple59

    snapple59 New Member 5+ Year Member

    113
    0
    Jun 26, 2006
    You should remember that H-bond is alot stronger than dipole bond. A molecule with dipole bond doesn't dissolve as well as H-bond.

     
  8. lilchinoboy03

    lilchinoboy03 2+ Year Member

    212
    0
    Jul 26, 2006
    whose glad they're done with the DATs after reading stuff like this? I AM! haha jk jk...we'll all get there soon...dont worry! but yea...the answer is D for sure. hydrogen bonding is a big player on the DATs!
     
  9. 997GT3

    997GT3 There is no substitute. 10+ Year Member

    371
    3
    Jul 28, 2006
    wow I haven't studied for it and i got it right! is this question considered easy or hard compared to other chem questions?
     

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