JEE Main & Advanced Chemistry Equilibrium / साम्यावस्था Question Bank Self Evaluation Test - Equilibrium

  • question_answer
    Consider the expression \[\Delta G=-\,RT\,\ln {{K}_{p}}+RT\,\ln {{Q}_{p}}\]  and indicate the correct statement at equilibrium

    A) \[\Delta G=0,\text{ }{{Q}_{p}}>{{K}_{p}}\] the equilibrium reaction will shift from left to right

    B) \[\Delta G=0,\text{ }{{Q}_{p}}={{K}_{p}}\] the equilibrium reaction will shift from left to right

    C) \[\Delta G=\infty ,\text{ }{{Q}_{p}}<{{K}_{p}}\] the equilibrium reaction will shift from right to left

    D) \[\Delta G<0,\text{ }{{Q}_{p}}>{{K}_{p}}\] the equilibrium reaction will shift from right to left where \[{{Q}_{p}}\] and \[{{K}_{p}}\] term refer to reaction quotient and equilibrium constant at constant pressure respectively.

    Correct Answer: B

    Solution :

    [b] Van't Hoff reaction isotherm is \[\Delta G=\Delta G{}^\circ +RT\]In Qp When the reaction is in a state of equilibrium \[\Delta G=0\] Then \[\Delta {{G}^{{}^\circ }}=-RT\,ln\,{{Q}_{p}}=-RT\] ln \[{{K}_{p}}\]


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