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Some conceptual chemistry questions

  1. Oct 16, 2014 #1
    Hello! I have a few conceptual questions regarding thermochemistry.

    In thermochemistry, why is Q of solution equal to negative Q of reaction?
    Why is a volume decrease equal a POSITIVE value for w?
  2. jcsd
  3. Oct 17, 2014 #2

    Simon Bridge

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    You should be able to answer those questions yourself from a consideration of which quantities the letters in question represent and where those quantities come from - the properties that the relations are illustrating.

    i.e. if a solution heats up, where did the heat energy come from?
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