JEE Main & Advanced Sample Paper JEE Main - Mock Test - 39

  • question_answer
    For the reaction \[\operatorname{AB}(g)=A\,(g)+B\,(g)\], AB is \[33\,%\] dissociated at a total pressure of P Therefore, P is related to K by one of the following options

    A) \[P={{K}_{p}}\]          

    B)        \[P=3\,{{K}_{p}}\]

    C) \[P=4\,{{K}_{p}}\]       

    D)        \[P=8\,{{K}_{p}}\]

    Correct Answer: D

    Solution :

    \[\operatorname{AB}\,(g)\,\,\rightleftharpoons \,\,A\,(g)+B\,(g)\] Initial moles       1          0          0 Moles at eqm.    1-0.33   0.33      0.33 \[{{P}_{A}}=\,\,\left( \frac{0.33}{1.33} \right)P,\,\,{{p}_{B}}=\left( \frac{0.33}{1.33} \right)P\] \[{{P}_{AB}}\,\,=\,\,\left( \frac{0.66}{1.33} \right)P\] \[{{K}_{p}}=\,\,\frac{0.33\times 0.33\times P}{0.66\times 1.33}\] \[\frac{P}{{{K}_{p}}}=\,\,8\,;\,\,\,\,P=\,\,8\,{{K}_{p}} & \]


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