Q.

The favourable conditions for a spontaneous reaction are

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a

TΔS=ΔH,ΔH=+ve,ΔS=+ve

b

TΔS=ΔH,ΔH=-ve,ΔS=-ve

c

TΔS>ΔH,ΔH=+ve,ΔS=+ve

d

TΔS>ΔH,ΔH=+ve,ΔS=-ve

answer is A.

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Detailed Solution

  •  The free energy charge G is given by, G=H-TS
  • The reaction is spontaneous if G<0.

H-TS<0

TS>ΔH,H=+ve,S=+ve

Hence the correct answer is (A) TΔS>ΔH,ΔH=+ve,ΔS=+ve

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