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Per NCERT §5.6(c) (criteria), the sign of ΔG for a SPONTANEOUS process at constant T and p is which?
AΔG = 0 always
BΔG > 0 always
CΔG < 0 (negative) → spontaneous; ΔG > 0 → non-spontaneous; ΔG = 0 → equilibrium
DΔG = ΔH
Answer & Solution
Correct answer: C. ΔG < 0 (negative) → spontaneous; ΔG > 0 → non-spontaneous; ΔG = 0 → equilibrium
Per NCERT eqn 5.22, ΔG < 0 for spontaneous; ΔG > 0 non-spontaneous; ΔG = 0 at equilibrium.
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