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AP EAMCET202023 Sep 2020Morning ShiftChemistryd and f Block ElementsActual

For the reaction. 2 H 2   g + O 2   g ⟶ 2 H 2 O   g ,   at   300   K ,   ΔG and ΔH of water are - 228 . 4   kJ . mol - 1 and - 241 . 60   kJ . mol - 1 , respectively. Then calculate the value of change in entropy for the given reaction.

Options

  1. A+ 88   J / K
  2. B+ 4 . 4   kJ / K
  3. C- 88   J / K
  4. D- 44   J / K

Correct answer

D. - 44   J / K

Step-by-step solution

From the relation of thermodynamics, we have, ∆ S =   ∆ H   -   ∆ G T   =   - 241 . 6   - ( - 228 . 4 )   ×   10 3 300   =   - 44   J / K

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