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A reaction occurs spontaneously if

(a) TΔS < ΔH and both ΔH and ΔS are +ve

(b) TΔS > ΔH and ΔH is +ve and ΔS is -ve

(c) TΔS > ΔH and both ΔH and ΔS are +ve

(d) TΔS = ΔH and both ΔH and ΔS are +ve

1 Answer

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Best answer

The correct option is: (c) TΔS > ΔH and both ΔH and ΔS are +ve

Explanation:

ΔG =  ΔH - TΔS

ΔG = -ve for spontaneous reaction

When ΔS = +ve, ΔH = +ve

and TΔS > ΔH => ΔG = -ve 

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