Q.

For the reaction :2NO2(g)N2O4(g), when ΔS=176.0JK1 and ΔH=57.8kJmol1 the magnitude of ΔG in kJmol1 at 298 k for the reaction is ________ 

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answer is 5.

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Detailed Solution

2NO2(g)N2O4(g)ΔH=57.8kJ/molΔS=176.0JK1;ΔG=ΔHTΔS=57.8kJ/mol176×298×103kJ/mol=57.8kJ/mol+52.448kJ/mol=5.35kJ/mol 

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