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KVPY Sample Paper KVPY Stream-SX Model Paper-9

  • question_answer
    \[2NOBr\,(g)\,\,\,\,2NO\,(g)+B{{r}_{2}}\,(g).\] If nitrosyl bromide (NOBr) is 40% dissociated at certain temperature and a total equilibrium pressure of 0.30 atm. \[{{K}_{P}}\] for the reaction \[2NOB{{r}_{2}}\,(g)\,\,\,\,2\,NOBr\,(g)\]

    A) 45        

    B) 25   

    C) 0.022

    D) 0.25

    Correct Answer: A

    Solution :

    \[2NOBr\,\,\,\,2NO+B{{r}_{2}}\] Let initial pressure
    \[\begin{matrix}    P-2x & 2x & x  \\    P-0.4P & 0.4P & 0.2P  \\ \end{matrix}\]
    \[1.2P=0.3\]
    \[P=0.25\,\,am\]
    \[{{K}_{P}}=\frac{p_{NOBr}^{2}}{p_{NO}^{2}.{{p}_{B{{r}_{2}}}}}=45\]             


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