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NEET Sample Paper NEET Sample Test Paper-45

  • question_answer
    For the reaction \[PC{{l}_{5}}\rightleftharpoons PC{{l}_{3}}+C{{l}_{2}}\] at equilibrium each of \[PC{{l}_{5}}\], \[PC{{l}_{3}}\] and \[C{{l}_{2}}\] was found to be 3 moles. If the total pressure is 3 atm. What is the value of\[{{K}_{p}}\]?

    A) 1.0                               

    B) 3.0

    C) 4.0                               

    D) 6.0

    Correct Answer: A

    Solution :

    Total moles at equilibrium \[=3+3+3=9\] moles Partial pressure of \[PC{{l}_{3}}\]} or \[C{{l}_{2}}\] or \[PC{{l}_{5}}=\frac{3}{9}\times 3=1\] \[\therefore \,\,\,\,\,\,\,\,\,\,{{K}_{p}}\,=\,\,\frac{{{P}_{PC{{l}_{3}}}}.\,{{P}_{C{{l}_{2}}}}}{{{P}_{PC{{l}_{5}}}}}\,\,=\,\,\frac{1\times 1}{1}\,\,=\,\,1.0\]


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