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Law of thermodynamics

  1. Apr 10, 2006 #1


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    I am confused on how to find out the heat of combustion of solid citric acid to water and carbondioxide that is deltaH 296 -1986 kJ/mol. I need to figure out the heat liberated when 10g of citric acid is totally combusted at 298k? *a) At constant pressure?? at constant volume?? and why is it not necessary to specify the pressure in part a?
  2. jcsd
  3. Apr 10, 2006 #2


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    hello can one give me some input
  4. Apr 11, 2006 #3


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    Staff Emeritus
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    HINT: Think about converting your mass into moles. (what units is [itex]\Delta H[/itex] given as)?
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