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NEET2002ChemistryThermodynamics (C)Actual

2 ~moles of the ideal gas at 27^ C temperature is expanded reversibly from 2 ~L to 20 ~L . Find the entropy change ( R =2 cal mol ⁻¹ . . K ⁻¹ ) :

Options

  1. A92.1
  2. B0
  3. C4
  4. D9.2

Correct answer

D. 9.2

Step-by-step solution

aligned & S =2.303 n R ₁₀ V ₂ ~V ₁ & =2.303 2 2 ₁₀ 20 2 & =2.303 2 2 1 & =9.212 cal aligned

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