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JCECE Medical JCECE Medical Solved Paper-2005

  • question_answer
    For the reaction \[{{H}_{2}}(g)+{{I}_{2}}(g)2HI(g)\]the equilibrium constants expressed in terms of concentrations \[{{\text{K}}_{\text{c}}}\]and in terms of partial pressures \[{{\text{K}}_{p}},\]are related as:

    A) \[{{K}_{p}}={{K}_{c}}{{(RT)}^{2}}\]

    B)  \[{{K}_{p}}={{K}_{c}}{{(RT)}^{-2}}\]

    C)  \[{{K}_{p}}={{K}_{c}}\]

    D)  \[{{K}_{c}}={{K}_{p}}(RT)\]

    Correct Answer: C

    Solution :

     Key Idea:\[{{K}_{c}}={{K}_{p}}{{(RT)}^{\Delta n}}\] Find value of An and substitute in formula to find relationship between \[{{K}_{c}}\]and \[{{K}_{p}}.\] \[{{H}_{2}}g+{{I}_{2}}(g)2HI(g)\] \[\therefore \]  \[\Delta n=2-2=0\] \[\therefore \]\[{{K}_{c}}={{K}_{p}}{{(RT)}^{o}}\] \[\therefore \]\[{{K}_{c}}={{K}_{p}}\]


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