NEET AIPMT SOLVED PAPER SCREENING 2011

  • question_answer
    For the reaction \[{{N}_{2}}(g)+{{O}_{2}}\]\[(g)2\]\[NO(g),\]the equilibrium constant is \[{{K}_{1}}\]. The equilibrium constant is \[{{K}_{2}}\] for the reaction \[2NO(g)+{{O}_{2}}(g)\]\[2N{{O}_{2}}(g).\]What is K for the reaction \[N{{O}_{2}}(g)\frac{1}{2}{{N}_{2}}(g)+{{O}_{2}}(g)\]?

    A) \[1/(4{{K}_{1}}{{K}_{2}})\]                          

    B)  \[{{[1/{{K}_{1}}{{K}_{2}}]}^{1/2}}\]        

    C)        \[1/({{K}_{1}}{{K}_{2}})\]             

    D)         \[1/(2{{K}_{1}}{{K}_{2}})\]

    Correct Answer: B

    Solution :

    \[{{N}_{2}}(g)+{{O}_{2}}(g)2NO(g);{{K}_{1}}\]    ?(i) \[\frac{2NO(g)+{{O}_{2}}(g)2N{{O}_{2}}(g);{{K}_{2}}}{{{N}_{2}}(g)+2{{O}_{2}}(g)2N{{O}_{2}}(g);K={{K}_{1}}\times {{K}_{2}}}\]?(i) \[\therefore \]For\[N{{O}_{2}}(g)\frac{1}{2}{{N}_{2}}(g)+{{O}_{2}}(g);\] \[K={{\left[ \frac{1}{{{K}_{1}}{{K}_{2}}} \right]}^{1/2}}\]


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