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MHT CET202310 May 2023Morning ShiftChemistryThermodynamics (C)Actual

Calculate the final volume when 2 moles of an ideal gas expand from 3 dm ^3 at constant external pressure 1.6 bar and the work done in the process is 800 ~J .

Options

  1. A2.66 dm ^3
  2. B4.8 dm ^3
  3. C5.0 dm ^3
  4. D8.0 dm ^3

Correct answer

D. 8.0 dm ^3

Step-by-step solution

aligned & W =- P _ ext V =- P _ ext ( V ₂- V ₁ ) & V ₁=3 dm ^3 & ~V ₂=? & P _ ext =1.6 bar & W =-800 ~J =8 dm ^3 bar ( 100 ~J =1 dm ^3 bar ) & -8=-1.6 ( ~V ₂-3 ) & V ₂-3=5 & ~V ₂=8 dm ^3 aligned

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