Question

for spontaneous change a system undergoes Lowering of free energy Lowering of entropy Increase in internal energy No change​

Answer 1

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In an open system, energy can be added to a system to cause a decrease in entropy, but this is not necessarily a spontaneous reaction. If entropy (disorder) increases, and the reaction enthalpy is exothermic ( ΔH<0 ) or weakly endothermic ( ΔH>0 & small), the reaction is generally spontaneous.

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Answer 2

$an\: increases\: in\: internal\: energy$

$a\: lowering \:of \:entropy$

$a\: lowering\: of\: free\: energy$

$no\: energy\: change$

$Answer :B$

$Solution :$

By definition, a spontaneous change is always accompanied by lowering of free energy.

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