JEE Main & Advanced AIEEE Solved Paper-2012

  • question_answer
    The equilibrium constant \[({{K}_{c}})\] for the reaction \[{{N}_{2}}(g)+{{O}_{2}}(g)\to 2NO\,\,(g)\] at temperature T is \[4\times {{10}^{-4}}\]. The value of \[{{K}_{c}}\] for the reaction \[NO(g)\to \frac{1}{2}{{N}_{2}}(g)+\frac{1}{2}\,\,\,{{O}_{2}}(g)\] at the same temperature is :   AIEEE  Solved  Paper-2012

    A) 0.02                                          

    B) \[2.5\times {{10}^{2}}\]

    C) \[4\times {{10}^{-4}}\]                     

    D) 50.0

    Correct Answer: D

    Solution :

                 \[{{N}_{2}}+{{O}_{2}}\xrightarrow{{}}2NO\]           \[K=4\times {{10}^{-4}}\]              \[NO\xrightarrow{{}}\frac{1}{2}{{N}_{2}}+\frac{1}{2}{{O}_{2}}\]    \[K'=\frac{1}{\sqrt{K}}=\frac{1}{\sqrt{4\times {{10}^{-4}}}}=50\]                           


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