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Given the molar enthalpy change for the reaction at 298k is


CH3CH2CH3 (g) + 5O2 (g)   →  3CO2 (g) + 4H2O (l)

Given the molar enthalpy change for the reaction at 298k is -2222 kj/mol and the value is temperature independent, calculate the internal energy in Kj/mol at 327k for the reaction.

Data:

S° (O2 (g) ) = 205 J K-1 mol-1

S° (CH3CH2CH3 (g) ) = 270 J K-1 mol-1

S° (CO2 (g) ) = 214 J K-1 mol-1

S° (H2O (l) ) = 70 J K-1 mol-1

R  =  8.314 J K-1 mol-1  =  0.08206 L atm K-1 mol-1

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