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JEE Main & Advanced Sample Paper JEE Main Sample Paper-12

  • question_answer
    For the reaction takes place at certain temperature \[N{{H}_{4}}HSN{{H}_{3}}\,(g)+{{H}_{2}}S(g),\] if equilibrium pressure is X bar, then \[\Delta {{G}^{o}}\]would be

    A)  \[-2RT\ln X\]                    

    B)  \[-RT\ln (X-\ln 2)\]

    C)  \[-2RT(\ln X-\ln 2)\]      

    D)  None of these

    Correct Answer: C

    Solution :

     \[{{P}_{N{{H}_{3}}}}={{P}_{{{H}_{2}}S}}=\frac{P}{2}=\frac{X}{2}\]\[\Delta {{G}^{o}}=-RT\ln {{K}_{p}}=-RT\ln {{\left( \frac{X}{2} \right)}^{2}}=-2RT\ln \left( \frac{X}{2} \right)\] \[=-2RT(\ln X-\ln 2)\]


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