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JEE Main20204 Sep 2020Evening ShiftChemistryThermodynamics (C)Actual

Five moles of an ideal gas at 1 bar and 298 K is expanded into vacuum to double the volume. The work done is :

Options

  1. AC v T 2 - T 1
  2. B- RT V 2 - V 1
  3. C- RT   ln   V 2 / V 1
  4. DZero

Correct answer

D. Zero

Step-by-step solution

W = - P ext  ΔV In expansion against vacuum P ext = 0 So work done is zero.

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