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AP EAMCET202316 May 2023Evening ShiftChemistryThermodynamics (C)Actual

If G and S for the reaction A ( g ) B ( g )+2 C ( g ) at 2000 ~K are -40 ~kJ ~mol ⁻¹ and 0.22 ~kJ ~K ⁻¹ ~mol ⁻¹ respectively, the change in internal energy for the same reaction approximately (in kJ mol ⁻¹ ) is

Options

  1. A366.7
  2. B-366.7
  3. C400
  4. D-400

Correct answer

C. 400

Step-by-step solution

aligned & u= U-T S & U= G+T S & U=-40+(2000 (0.22)) & u=-40+440 ~kJ mal ⁻¹ & U=400 ~kJ ~mol -1 aligned Ans is option c) 400

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