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MHT CET20225 Aug 2022Morning ShiftChemistryThermodynamics (C)Actual

Under isothermal condition a gas expands from 0.2 dm ^3 to 0.8 dm ^3 against a constant pressure of 2 bar at 300 ~K . Find the work done by the gas.

Options

  1. A160 ~J
  2. B-120 ~J
  3. C-40 ~J
  4. D20 ~J

Correct answer

B. -120 ~J

Step-by-step solution

aligned W & =- PdV & =-2(0.8-0.2) bar - dm ^2 & =-2(0.6) 10^2 ~J & =-120 ~J aligned

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