2. Solved Papers
  3. RAJASTHAN PMT

RAJASTHAN PMT Rajasthan - PMT Solved Paper-2008

  • question_answer
    In an irreversible process taking place at constant \[T\] and \[P\] and in which only pressure-volume work is being done, the change in Gibbs free energy \[(dG)\] and change in entropy\[(dS)\], satisfy the criteria

    A) \[{{(dS)}_{V,\,\,E}}<0,\,\,{{(dG)}_{T,\,\,P}}<0\]

    B)        \[{{(dS)}_{V,\,\,E}}>0,\,\,{{(dG)}_{T,\,\,P}}<0\]

    C)        \[{{(dS)}_{V,\,\,E}}=0,\,\,{{(dG)}_{T,\,\,P}}=0\]

    D)        \[{{(dS)}_{V,\,\,E}}=0,\,\,{{(dG)}_{T,\,\,P}}>0\]

    Correct Answer: B

    Solution :

    An irreversible process \[\Rightarrow \]spontaneous process \[\Rightarrow {{(dS)}_{VE}}\](change in entropy)\[=+ve>0\] \[\Rightarrow \]\[{{(dG)}_{T,\,\,P}}\](change in Gibbs free energy) \[-ve\Rightarrow \,\,<0\]


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