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AP EAMCET202317 May 2023Evening ShiftChemistryThermodynamics (C)Actual

If 5 ~L of an ideal gas at a constant external pressure of 2 ~atm expands isothermally to a final volume of ' X ' L , the system does a work of -2,026.4 ~J . ' X ' (in L) is (1 L. atm =101.32 ~J )

Options

  1. A25
  2. B20
  3. C15
  4. D10

Correct answer

C. 15

Step-by-step solution

W =- P _ ext ( V ₂- V ₁ )=-2( x -5)=-2026.4 ~J aligned & =-20 L.atm & -2 x+10=-20 2 x-10=20 & x=15 L aligned

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