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destroyer gchem #121 mistake

Discussion in 'DAT Discussions' started by osimsDDS, Jun 20, 2008.

  1. osimsDDS

    5+ Year Member

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    I believe i found a mistake in destroyer gchem #121

    its an easy heat of reaction problem that takes 2 seconds to do but their answer is wrong...its supposed to be B (-250) but they say its A...someone back me up on this thanks...
     
  2. Glycogen

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    I've got -550.I think the answer is right.
    You don't change the sign of any of them since they are in the right position,and you just need to divide both reactions by 2 and then add them up.
    -400+(-150)= -550
     
    #2 Glycogen, Jun 20, 2008
    Last edited: Jun 20, 2008
  3. harrygt

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    I don't have destroyer. Put up the question if you want.
     
  4. osimsDDS

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    crap my bad your right nvm somehow i subtracted b/c i just woke up and thought it was dH of reaction...my bad thanks
     
  5. Dmitry Malayev

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    :laugh: It's funny how everyone tries to find mistakes in these books. I haven't found a single mistake in Destroyer or in Kaplan as of yet. But i did find a couple in Barons, that's why i don't like using it.
     
  6. doc toothache

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    :thumbup::thumbup:

    Every question we get wrong is, by definition, a mistake in the book until proven otherwise.
     
    #6 doc toothache, Jun 21, 2008
    Last edited: Jun 21, 2008
  7. Montserrat

    Montserrat Proud of my Pats
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    If you've purchased updates to the destroyer, you'll notice that a section is dedicated towards amending typos/answer choice errors. They certainly do make mistakes - I found two in an earlier addition when I prepped for the DAT.
     

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