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JIPMER Jipmer Medical Solved Paper-1997

  • question_answer
    In the dissociation of \[HI(g)\], it is found that 20% of \[HI\]is dissociated. The equilibrium constant will be:

    A)  0.0625          

    B)  16                         

    C)  0.0156                   

    D)  64

    Correct Answer: C

    Solution :

    \[\begin{matrix}    {} & 2HI(g)\rightleftharpoons  & {{H}_{2}}(g)+ & {{I}_{2}}(g)  \\    {} & 1 & 0 & 0  \\    \text{at}\,\text{Equil}\text{.} & 1-0.20 & \frac{0.20}{2} & \frac{0.20}{2}  \\    {} & =0.80 & =0.10 & =0.10  \\ \end{matrix}\] According to law of mass-action \[{{K}_{c}}=\frac{[{{H}_{2}}]\,\,[{{I}_{2}}]}{{{[HI]}^{2}}}\] \[=\frac{(0.10)\,(0.10)}{{{(0.80)}^{2}}}=\frac{1}{64}\] \[=0.0156\]


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