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April 17, 2014

Homework Help: Chemistry

Posted by John on Thursday, March 29, 2012 at 9:04am.

Consider the cracking of gaseous ammonia at constant total pressure of 1 atm and constant temperature. Find the equilibrium gas composition at 400 degree C.

Given:
The Gibbs free energy for the cracking reaction
2NH3 = N2 + 3H2,
DeltaGo ( delta G standard) =87,030-25.8TlnT 31.7T, J

Answer: PH2 = 0.7465 atm, PN2 = 0.2488 atm, PNH3 = 0.0047 atm

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