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A reaction becomes spontaneous only at 5...

A reaction becomes spontaneous only at 500K. If `Delta H` at 500 K is 3.0 kJ, the change in entropy at 500 K

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The correct Answer is:
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`Delta G lt 0` for spontaneity , `Delta H - T Delta S lt 0`
`3 xx 10^(3) - 500 xx Delta S lt 0`
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