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AP EAMCET202119 Aug 2021Morning ShiftChemistryThermodynamics (C)Actual

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?

Options

  1. AΔG = − ve , ΔH = − ve , ΔS = + ve
  2. BΔG = + ve , ΔH = + ve , ΔS = + ve
  3. CΔG = − ve , ΔH = + ve , ΔS = + ve
  4. DΔG = + ve , ΔH = + ve , ΔS = − ve

Correct answer

C. ΔG = − ve , ΔH = + ve , ΔS = + ve

Step-by-step 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

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