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NEET Sample Paper NEET Sample Test Paper-23

  • question_answer
    \[A+BC+D.\]If initially the concentration of A and B are both equal but at equilibrium concentration of D will be twice of that of A, then what will be the equilibrium constant of that reaction?

    A) \[\frac{7}{8}\]                        

    B) \[\frac{4}{9}\]

    C)  \[\frac{2}{6}\]                                   

    D)  4 

    Correct Answer: D

    Solution :

    \[A+BC+D\] \[x\,\,\,\,x\,\,\,\,\underset{2x}{\mathop{0}}\,\,\,\,\,\,\underset{\,\,\,\,\,\,2x\,\,\,\,(\text{At equilibrium)}}{\mathop{0\,\,\,\,(initially)}}\,\] \[{{K}_{c}}=\frac{[C][D]}{[A][B]}\] \[=\frac{2x\times 2x}{x\times x}\] \[=4\] Hence, the correct option is [d].


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