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MHT CET20239 May 2023Evening ShiftChemistryThermodynamics (C)Actual

An ideal gas expands by 1.5 ~L against a constant external pressure of 2 ~atm at 298 ~K . Calculate the work done?

Options

  1. A-75 ~J
  2. B-303.9 ~J
  3. C13.3 ~J
  4. D-30 ~J

Correct answer

B. -303.9 ~J

Step-by-step solution

aligned W & =- P _ ext V & =-2 ~atm (1.5 ~L ) & =-3 ~atm ~L 1.01325=-3.0398 dm ^3 bar aligned Now, 1 dm ^3 bar =100 ~J Hence, aligned -3.0398 dm ^3 bar 100 ~J 1 dm ^3 bar & =-303.98 ~J & -303.9 ~J aligned

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