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Solid amonium nitrate can decompose to dinitrogen oxide gas and liquid water. What is change in...

Solid amonium nitrate can decompose to dinitrogen oxide gas and liquid water. What is change in G at 298 K?
Is the decomposition reaction favoured @ Tem. above or below 298K?
from chapter 19 ( general chem.)
Spontaneous Change: Entropy & Gibbs Energy
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Answer #1

NH4NO3    N2O + H2O

find the H formation for the 3 compounds and then the S for each compound. T = 298K
G = H - T x S


NH4NO3 = 330kJ/mole.....i can't seem to find this value
H2O(l) = - 285.8kJ/mole.....69.9J/K-mole
N2O = 81.6kJ/mole.........219J/K-mole

for H = products - reactants
for S = products - reactant

plug in these numbers for H and S to determine G

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