1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Calculating Standard Enthalpy

  1. Nov 18, 2009 #1
    1. The problem statement, all variables and given/known data

    4 C3H5N3O9 -> 12 CO2+10 H2O+6 N2 -- H rxn = -5678kJ

    Standard Heat of Formation of CO2=-394KJ
    Standard Heat of Formation of H2O=-242KJ

    Calculate the standard enthalpy of formation for nitroglycerin.

    2. Relevant equations

    Product minus reactant (I think)

    3. The attempt at a solution

    I thought you would swap this equation which gives 5678Kj. Then you have 12 moles of carbon dioxide and 10 moles of water (nitrogen is zero). Thus:

    5678- (-4728 - 2420)

    I think I'm way off though.
     
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?



Similar Discussions: Calculating Standard Enthalpy
Loading...