If a chemical reaction is known to be non-spontaneous at 298   K but spontaneous at 350   K , then…

If a chemical reaction is known to be non-spontaneous at 298 K but spontaneous at 350 K, then which among the following conditions is true for the reaction?
  1. ΔG=−ve,ΔH=−ve,ΔS=+ve
  2. ΔG=+ve,ΔH=+ve,ΔS=+ve
  3. ΔG=−ve,ΔH=+ve,ΔS=+ve
  4. ΔG=+ve,ΔH=+ve,ΔS=−ve

Solution

So according to the question we have to find the non spontaneous process then

We know the second law of thermodynamics

∆G = ∆H -T∆S

So we know that for spontaneous

∆G<0

So for that we have the condition which is 

ΔG=−ve,ΔH=+ve,ΔS=+ve

Asked in: AP EAMCET 2021 (19 Aug Shift 1)

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