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AIIMS AIIMS Solved Paper-2001

  • question_answer
    Two moles of an ideal gas are compressed isothermally \[({{100}^{o}}C)\] and reversibly from a pressure of 10 atm to 25 atm, then the free energy change is:

    A)  \[+15.482\text{ }kJ\]    

    B)         \[+10.464\text{ }kJ\]    

    C)         \[+5.684kJ\]    

    D)         \[+3.364kJ\]

    Correct Answer: C

    Solution :

    We know that for isothermal reversible process \[{{W}_{rev}}=-2.303nRT\log \frac{{{P}_{1}}}{{{P}_{2}}}\] \[=-2.303\times 2\times 8.314\times 373\log \frac{10}{25}\] \[=+5684.1J=+5.684kJ\]


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