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question from the dat- chm

Discussion in 'DAT Discussions' started by kevin512, Apr 24, 2007.

  1. kevin512

    kevin512 :) 10+ Year Member

    264
    11
    Mar 20, 2007
    Gainesville, FL
    I didn't study for the chm portion of the dat. I the took the 2006 released version of the dat and got a 19. I need some help with the following question:

    54. At a constant temp when the following reactions involving gas are at equalibrium, which reaction shifts to the right if the pressure is increased?

    a. 2H_2_ + O_2_ --> 2h2o
    b. 2NO --> N_2_ + O_2_
    C. 2CO_2_ --> 2CO + O_2_

    I guessed it has something to do with entropy?

    Also, how do you do number 57 (if anyone has the test)?

    Thanks,
    Kevin
     
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  3. nate28

    nate28 7+ Year Member

    200
    0
    Nov 5, 2006
    California
    A. 2H_2_ + O_2_ --> 2H2O
    Maintaining equilibrium with an increase in pressure will shift towards the side with less moles of gas b/c that will occupy less volume.
    B has no change in the number of moles, and C has an increase.
     
  4. thebluebmw

    thebluebmw 2+ Year Member

    54
    0
    Jan 9, 2007
    Where can i get the 2006 released DAT, can u send it to me if possibly?
     
  5. DASicari

    DASicari 10+ Year Member

    180
    8
    Mar 25, 2007
    Orange County, CA
    Is that DAT the same test as the actual test from last year?
     
  6. ATLATLATL

    ATLATLATL 2+ Year Member

    113
    0
    Jan 9, 2007
    what did u guys think of the PAT on this practice test?
     
  7. Lonely Sol

    Lonely Sol cowgoesmoo fan! 10+ Year Member

    684
    0
    Dec 13, 2005
    Atlanta, GA
    I think the whole test is crap, just a good energy booster!! Ppl should take it the last day before the test, it will give you a ready feeling, which is a must before the test. (Just dont depend too much on it as far as studying goes)!
     
  8. infernobutterfl

    infernobutterfl Pyro user 7+ Year Member

    121
    0
    May 26, 2005
    lol... moral booster.. :)
     

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