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MHT CET20192 May 2019Morning ShiftChemistryThermodynamics (C)Actual

Three moles of an ideal gas are expanded isothermally from a volume of 300 c m 3 to 2.5 L at 300 K against a pressure of 1.9 a t m . The work done in joules is

Options

  1. A- 423.56 J
  2. B+ 423.56 J
  3. C- 4.18 J
  4. D+ 4.8 J

Correct answer

A. - 423.56 J

Step-by-step solution

W = - P × d V = - 1.9 a t m × 2.5 - 0.3 L = - 1.9 a t m × 2.2 L = - 4.18 a t m × L = - 4.18 a t m × 101.325 J ∵ 1 a t m × L = 101.325 J = - 423.56 J

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