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Per NCERT eqn 5.20-21, GIBBS energy G and its change ΔG at constant T are given by which expressions?
AΔG = q + w
BG = U + pV
CG = H − TS; ΔG = ΔH − T ΔS (at constant T)
DΔG = ΔH + T ΔS
Answer & Solution
Correct answer: C. G = H − TS; ΔG = ΔH − T ΔS (at constant T)
Per NCERT eqn 5.20+5.21, G = H − TS (state function). ΔG = ΔH − TΔS at constant T. Master criterion for spontaneity.
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