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ChemistryNEET 2024First law, enthalpy and Hess's law

Thermodynamics

The work done during the reversible isothermal expansion of one mole of hydrogen gas at C from a pressure of 20 atmosphere to 10 atmosphere is (given ):

  1. A.–413.14 calories
  2. B.413.14 calories
  3. C.100 calories
  4. D.0 calorie

Solution

cal. Work done by the gas on expansion is negative in the sign convention used.

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