1.

For a reaction at 25^(@)C enthalpy change and entropy changes are -11.7 xx 10^(3) J mol^(-1)and -105 J mol^(-1)K^(-1) respectively. What is the Gibbs free energy

Answer»

15.05 KJ
19.59 kJ
2.55 Kj
22.55 kJ

Solution :`DeltaG=DeltaH-TDeltaS, T=25+273=298 K`
`=-11.7xx10^(3)-298xx(-105)=19590 J=19.59 kJ`.


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