1.

For the oxidation of Iron : 4Fe(s) + 3O2(g) → 2Fe2O3(g) Entropy change and Enthalpy change at 298 K are – 549.4 J/K/mol and -1648 × 103 J/mol respectively. Calculate the free energy change for the reaction. Is the reaction spontaneous at 298 K.

Answer»

ΔG = ΔH – TΔS 

ΔG = -1648000 + 163721.2 

= -1484278.8 J/mol 

= -1484.2788 kJ/mol 

The reaction is spontaneous.



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