2. Solved Papers
  3. AMU Medical

AMU Medical AMU Solved Paper-2014

  • question_answer
    One mole of an ideal gas at 300 K is expanded isothermally from initial volume of 1 L to 10 L. The \[\Delta E\] for this process is (R = 2 cal\[mo{{l}^{-1}}{{K}^{-1}}\])

    A)  163.7 cal             

    B)  zero

    C)  138.1 cal             

    D)  9 L atom

    Correct Answer: B

    Solution :

                    In an isothermal expansion, heat is allowed to flow into or out of the system so that temperature remains constant throughout the expansion of gas. For an ideal gas, AE (internal energy) depends upon temperature only, therefore at constant temperature, \[\Delta E\](i.e., isothermally), the internal energy of the gas remains constant, i.e., \[\Delta E\] is zero.


You need to login to perform this action.
You will be redirected in 3 sec spinner