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JEE Main & Advanced Sample Paper JEE Main Sample Paper-37

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

    A)  \[-2\,RT\,\] In X  

    B)  \[-2\,RT\,\] In (X- In 2)

    C)   \[-2\,RT\,\] (In X- In 2)

    D)  None of these

    Correct Answer: C

    Solution :

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


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