Homework Help: chemistry

Posted by Amandeep on Saturday, April 19, 2008 at 10:05pm.

Find the temperature at which the reaction below is spontaneous given this data:
Hf^o of NH3(g) = - 46 kJ/mol, S^o of NH3(g) = 192.5 J/mol·K, S^o of N2(g) = 191.5 J/mol·K,
S^o of H2(g) = 130.6 J/mol·K.

N2(g) + 3H2(g) <-----> 2NH3(g)

chemistry - DrBob222, Saturday, April 19, 2008 at 10:11pm
delta G = delta H - TdeltaS
delta H you have.
delta S_rxn = S_products - S_reactants
Solve for T which will give a negative G.

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