Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Enthalpy of the decomposition reaction of N2H4 gas

  1. Jan 28, 2013 #1
    I am trying to determine the change of heat for:

    N2H4(g) -> N2(g) + 2H2(g)

    Here is what I did and what I got the correct answer is -86.0 which I am clearly not getting

    [(163)+ (2*436)] - [(4*391) + (163)] = -692

    thanks for any help!
  2. jcsd
  3. Jan 28, 2013 #2
    Where have all these numbers come from?
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Threads - Enthalpy decomposition reaction Date
Enthalpy of Formation of Tetraoxygen Nov 16, 2017
Standard Enthalpy of formation of Graphene Oct 20, 2017
Full thermal decomposition of metal oxides? May 14, 2017
Bond enthalpy periodic trend? Apr 20, 2017