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MHT CET20239 May 2023Morning ShiftChemistryThermodynamics (C)Actual

Calculate the value of G for following reaction at 300 ~K . aligned & H ₂ O _ ( s ) H ₂ O _ (l) & ( H =7 ~kJ , S =24.8 ~J ~K ⁻¹ ) aligned

Options

  1. A0.74 ~kJ ~mol ⁻¹
  2. B-0.82 ~kJ ~mol ⁻¹
  3. C0.21 ~kJ ~mol ⁻¹
  4. D-0.44 ~kJ ~mol ⁻¹

Correct answer

D. -0.44 ~kJ ~mol ⁻¹

Step-by-step solution

aligned H & =7 ~kJ S & =24.8 ~J ~K ⁻¹=24.8 10⁻³ ~kJ ~K ⁻¹ ~T & =300 ~K G & = H - T S G & =7 ~kJ - (300 ~K 24.8 10⁻³ ~kJ ~K ⁻¹ ) & =7 ~kJ -7.44 ~kJ =-0.44 ~kJ aligned

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