11th Class Chemistry Thermodynamics

  • question_answer 73)   Expansion of a gas in vacuum is called free expansion. Calculate work done and the change in internal energy when 1 litre of ideal gas expands isothermally into vacuum until its total volume is 5 litre.

    Answer:

      In free isothermal expansion, external pressure is zero hence work will also be zero. \[w=P\Delta V=0\] \[\Delta U=0\]for all isothermal processes.                


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