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NEET2018ChemistryThermodynamics (C)Actual

What is the entropy change in 2 ~mol ~N ₂ , when its temperature is taken from 400 ~K to 800 ~K , at constant pressure?

Options

  1. A30 ~J / K
  2. B60 ~J / K
  3. C40 ~J / K
  4. D20 ~J / K

Correct answer

C. 40 ~J / K

Step-by-step solution

S=n C_p T₂ T₁ =2 7 2 R 800 400 =40 ~J / K

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