Q.

A process is non-spontaneous at all temperatures when

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ΔH=−60kJ,ΔS=+30kJ

ΔH=+54kJ,ΔS=+63kJ

ΔH=-30kJ,ΔS=-45kJ

ΔH=+21kJ,ΔS=-12kJ

answer is 4.

(Detailed Solution Below)

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Detailed Solution

Option 4……ΔH=+ve;ΔS=−ve,the process is non-spontaneous at all temperatures.ΔG=ΔH−TΔSΔG=+ve−T−veΔG=+ve

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