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Question

For a reaction to be spontaneous, the sign of Gibbs Free Energy change ΔG is ________.

A
always negative
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B
always positive
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C
sometimes negative
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D
sometimes positive
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E
The sign of ΔG has no effect on spontaneity
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Solution

The correct option is A always negative
ΔG= negative for spontaneous reaction.

ΔG= Positive for non-spontaneous reaction.

ΔG= 0 for equilibrium.

Hence, the correct option is A.

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